diff --git a/pkg/strat/directory-sensitive.go b/pkg/strat/directory-sensitive.go
index 87edaec..89d030e 100644
--- a/pkg/strat/directory-sensitive.go
+++ b/pkg/strat/directory-sensitive.go
@@ -2,23 +2,28 @@ package strat
 
 import "github.com/curusarn/resh/pkg/records"
 
+// DirectorySensitive prediction/recommendation strategy
 type DirectorySensitive struct {
 	history map[string][]string
 	lastPwd string
 }
 
+// Init see name
 func (s *DirectorySensitive) Init() {
 	s.history = map[string][]string{}
 }
 
+// GetTitleAndDescription see name
 func (s *DirectorySensitive) GetTitleAndDescription() (string, string) {
 	return "directory sensitive (recent)", "Use recent commands executed is the same directory"
 }
 
+// GetCandidates see name
 func (s *DirectorySensitive) GetCandidates() []string {
 	return s.history[s.lastPwd]
 }
 
+// AddHistoryRecord see name
 func (s *DirectorySensitive) AddHistoryRecord(record *records.EnrichedRecord) error {
 	// work on history for PWD
 	pwd := record.Pwd
@@ -34,6 +39,7 @@ func (s *DirectorySensitive) AddHistoryRecord(record *records.EnrichedRecord) er
 	return nil
 }
 
+// ResetHistory see name
 func (s *DirectorySensitive) ResetHistory() error {
 	s.Init()
 	s.history = map[string][]string{}
diff --git a/pkg/strat/dummy.go b/pkg/strat/dummy.go
index b21a60d..fc813f2 100644
--- a/pkg/strat/dummy.go
+++ b/pkg/strat/dummy.go
@@ -2,23 +2,28 @@ package strat
 
 import "github.com/curusarn/resh/pkg/records"
 
+// Dummy prediction/recommendation strategy
 type Dummy struct {
 	history []string
 }
 
+// GetTitleAndDescription see name
 func (s *Dummy) GetTitleAndDescription() (string, string) {
 	return "dummy", "Return empty candidate list"
 }
 
+// GetCandidates see name
 func (s *Dummy) GetCandidates() []string {
 	return nil
 }
 
+// AddHistoryRecord see name
 func (s *Dummy) AddHistoryRecord(record *records.EnrichedRecord) error {
 	s.history = append(s.history, record.CmdLine)
 	return nil
 }
 
+// ResetHistory see name
 func (s *Dummy) ResetHistory() error {
 	return nil
 }
diff --git a/pkg/strat/dynamic-record-distance.go b/pkg/strat/dynamic-record-distance.go
index 4a3be10..1f779c2 100644
--- a/pkg/strat/dynamic-record-distance.go
+++ b/pkg/strat/dynamic-record-distance.go
@@ -8,6 +8,7 @@ import (
 	"github.com/curusarn/resh/pkg/records"
 )
 
+// DynamicRecordDistance prediction/recommendation strategy
 type DynamicRecordDistance struct {
 	history            []records.EnrichedRecord
 	DistParams         records.DistParams
@@ -23,6 +24,7 @@ type strDynDistEntry struct {
 	distance float64
 }
 
+// Init see name
 func (s *DynamicRecordDistance) Init() {
 	s.history = nil
 	s.pwdHistogram = map[string]int{}
@@ -30,6 +32,7 @@ func (s *DynamicRecordDistance) Init() {
 	s.gitOriginHistogram = map[string]int{}
 }
 
+// GetTitleAndDescription see name
 func (s *DynamicRecordDistance) GetTitleAndDescription() (string, string) {
 	return "dynamic record distance (depth:" + strconv.Itoa(s.MaxDepth) + ";" + s.Label + ")", "Use TF-IDF record distance to recommend commands"
 }
@@ -38,6 +41,7 @@ func (s *DynamicRecordDistance) idf(count int) float64 {
 	return math.Log(float64(len(s.history)) / float64(count))
 }
 
+// GetCandidates see name
 func (s *DynamicRecordDistance) GetCandidates(strippedRecord records.EnrichedRecord) []string {
 	if len(s.history) == 0 {
 		return nil
@@ -70,6 +74,7 @@ func (s *DynamicRecordDistance) GetCandidates(strippedRecord records.EnrichedRec
 	return hist
 }
 
+// AddHistoryRecord see name
 func (s *DynamicRecordDistance) AddHistoryRecord(record *records.EnrichedRecord) error {
 	// append record to front
 	s.history = append([]records.EnrichedRecord{*record}, s.history...)
@@ -79,6 +84,7 @@ func (s *DynamicRecordDistance) AddHistoryRecord(record *records.EnrichedRecord)
 	return nil
 }
 
+// ResetHistory see name
 func (s *DynamicRecordDistance) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/frequent.go b/pkg/strat/frequent.go
index 6525b9f..ff3b912 100644
--- a/pkg/strat/frequent.go
+++ b/pkg/strat/frequent.go
@@ -6,6 +6,7 @@ import (
 	"github.com/curusarn/resh/pkg/records"
 )
 
+// Frequent prediction/recommendation strategy
 type Frequent struct {
 	history map[string]int
 }
@@ -15,14 +16,17 @@ type strFrqEntry struct {
 	count   int
 }
 
-func (s *Frequent) init() {
+// Init see name
+func (s *Frequent) Init() {
 	s.history = map[string]int{}
 }
 
+// GetTitleAndDescription see name
 func (s *Frequent) GetTitleAndDescription() (string, string) {
 	return "frequent", "Use frequent commands"
 }
 
+// GetCandidates see name
 func (s *Frequent) GetCandidates() []string {
 	var mapItems []strFrqEntry
 	for cmdLine, count := range s.history {
@@ -36,12 +40,14 @@ func (s *Frequent) GetCandidates() []string {
 	return hist
 }
 
+// AddHistoryRecord see name
 func (s *Frequent) AddHistoryRecord(record *records.EnrichedRecord) error {
 	s.history[record.CmdLine]++
 	return nil
 }
 
+// ResetHistory see name
 func (s *Frequent) ResetHistory() error {
-	s.init()
+	s.Init()
 	return nil
 }
diff --git a/pkg/strat/markov-chain-cmd.go b/pkg/strat/markov-chain-cmd.go
index 1bd1ded..b1fa2f5 100644
--- a/pkg/strat/markov-chain-cmd.go
+++ b/pkg/strat/markov-chain-cmd.go
@@ -8,6 +8,7 @@ import (
 	"github.com/mb-14/gomarkov"
 )
 
+// MarkovChainCmd prediction/recommendation strategy
 type MarkovChainCmd struct {
 	Order       int
 	history     []strMarkCmdHistoryEntry
@@ -24,15 +25,18 @@ type strMarkCmdEntry struct {
 	transProb float64
 }
 
+// Init see name
 func (s *MarkovChainCmd) Init() {
 	s.history = nil
 	s.historyCmds = nil
 }
 
+// GetTitleAndDescription see name
 func (s *MarkovChainCmd) GetTitleAndDescription() (string, string) {
 	return "command-based markov chain (order " + strconv.Itoa(s.Order) + ")", "Use command-based markov chain to recommend commands"
 }
 
+// GetCandidates see name
 func (s *MarkovChainCmd) GetCandidates() []string {
 	if len(s.history) < s.Order {
 		var hist []string
@@ -78,6 +82,7 @@ func (s *MarkovChainCmd) GetCandidates() []string {
 	return hist
 }
 
+// AddHistoryRecord see name
 func (s *MarkovChainCmd) AddHistoryRecord(record *records.EnrichedRecord) error {
 	s.history = append(s.history, strMarkCmdHistoryEntry{cmdLine: record.CmdLine, cmd: record.Command})
 	s.historyCmds = append(s.historyCmds, record.Command)
@@ -85,6 +90,7 @@ func (s *MarkovChainCmd) AddHistoryRecord(record *records.EnrichedRecord) error
 	return nil
 }
 
+// ResetHistory see name
 func (s *MarkovChainCmd) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/markov-chain.go b/pkg/strat/markov-chain.go
index 07006e0..50c7fdc 100644
--- a/pkg/strat/markov-chain.go
+++ b/pkg/strat/markov-chain.go
@@ -8,6 +8,7 @@ import (
 	"github.com/mb-14/gomarkov"
 )
 
+// MarkovChain prediction/recommendation strategy
 type MarkovChain struct {
 	Order   int
 	history []string
@@ -18,14 +19,17 @@ type strMarkEntry struct {
 	transProb float64
 }
 
+// Init see name
 func (s *MarkovChain) Init() {
 	s.history = nil
 }
 
+// GetTitleAndDescription see name
 func (s *MarkovChain) GetTitleAndDescription() (string, string) {
 	return "markov chain (order " + strconv.Itoa(s.Order) + ")", "Use markov chain to recommend commands"
 }
 
+// GetCandidates see name
 func (s *MarkovChain) GetCandidates() []string {
 	if len(s.history) < s.Order {
 		return s.history
@@ -58,12 +62,14 @@ func (s *MarkovChain) GetCandidates() []string {
 	return hist
 }
 
+// AddHistoryRecord see name
 func (s *MarkovChain) AddHistoryRecord(record *records.EnrichedRecord) error {
 	s.history = append(s.history, record.CmdLine)
 	// s.historySet[record.CmdLine] = true
 	return nil
 }
 
+// ResetHistory see name
 func (s *MarkovChain) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/random.go b/pkg/strat/random.go
index 27e959c..0ff52f1 100644
--- a/pkg/strat/random.go
+++ b/pkg/strat/random.go
@@ -7,21 +7,25 @@ import (
 	"github.com/curusarn/resh/pkg/records"
 )
 
+// Random prediction/recommendation strategy
 type Random struct {
 	CandidatesSize int
 	history        []string
 	historySet     map[string]bool
 }
 
+// Init see name
 func (s *Random) Init() {
 	s.history = nil
 	s.historySet = map[string]bool{}
 }
 
+// GetTitleAndDescription see name
 func (s *Random) GetTitleAndDescription() (string, string) {
 	return "random", "Use random commands"
 }
 
+// GetCandidates see name
 func (s *Random) GetCandidates() []string {
 	seed := time.Now().UnixNano()
 	rand.Seed(seed)
@@ -39,12 +43,14 @@ func (s *Random) GetCandidates() []string {
 	return candidates
 }
 
+// AddHistoryRecord see name
 func (s *Random) AddHistoryRecord(record *records.EnrichedRecord) error {
 	s.history = append([]string{record.CmdLine}, s.history...)
 	s.historySet[record.CmdLine] = true
 	return nil
 }
 
+// ResetHistory see name
 func (s *Random) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/recent-bash.go b/pkg/strat/recent-bash.go
index c5319ce..ace3571 100644
--- a/pkg/strat/recent-bash.go
+++ b/pkg/strat/recent-bash.go
@@ -2,21 +2,25 @@ package strat
 
 import "github.com/curusarn/resh/pkg/records"
 
+// RecentBash prediction/recommendation strategy
 type RecentBash struct {
 	histfile         []string
 	histfileSnapshot map[string][]string
 	history          map[string][]string
 }
 
+// Init see name
 func (s *RecentBash) Init() {
 	s.histfileSnapshot = map[string][]string{}
 	s.history = map[string][]string{}
 }
 
+// GetTitleAndDescription see name
 func (s *RecentBash) GetTitleAndDescription() (string, string) {
 	return "recent (bash-like)", "Behave like bash"
 }
 
+// GetCandidates see name
 func (s *RecentBash) GetCandidates(strippedRecord records.EnrichedRecord) []string {
 	// populate the local history from histfile
 	if s.histfileSnapshot[strippedRecord.SessionID] == nil {
@@ -25,6 +29,7 @@ func (s *RecentBash) GetCandidates(strippedRecord records.EnrichedRecord) []stri
 	return append(s.history[strippedRecord.SessionID], s.histfileSnapshot[strippedRecord.SessionID]...)
 }
 
+// AddHistoryRecord see name
 func (s *RecentBash) AddHistoryRecord(record *records.EnrichedRecord) error {
 	// remove previous occurance of record
 	for i, cmd := range s.history[record.SessionID] {
@@ -44,6 +49,7 @@ func (s *RecentBash) AddHistoryRecord(record *records.EnrichedRecord) error {
 	return nil
 }
 
+// ResetHistory see name
 func (s *RecentBash) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/recent.go b/pkg/strat/recent.go
index 68c8eff..157b52c 100644
--- a/pkg/strat/recent.go
+++ b/pkg/strat/recent.go
@@ -2,18 +2,22 @@ package strat
 
 import "github.com/curusarn/resh/pkg/records"
 
+// Recent prediction/recommendation strategy
 type Recent struct {
 	history []string
 }
 
+// GetTitleAndDescription see name
 func (s *Recent) GetTitleAndDescription() (string, string) {
 	return "recent", "Use recent commands"
 }
 
+// GetCandidates see name
 func (s *Recent) GetCandidates() []string {
 	return s.history
 }
 
+// AddHistoryRecord see name
 func (s *Recent) AddHistoryRecord(record *records.EnrichedRecord) error {
 	// remove previous occurance of record
 	for i, cmd := range s.history {
@@ -26,6 +30,7 @@ func (s *Recent) AddHistoryRecord(record *records.EnrichedRecord) error {
 	return nil
 }
 
+// ResetHistory see name
 func (s *Recent) ResetHistory() error {
 	s.history = nil
 	return nil
diff --git a/pkg/strat/record-distance.go b/pkg/strat/record-distance.go
index 816922e..e582584 100644
--- a/pkg/strat/record-distance.go
+++ b/pkg/strat/record-distance.go
@@ -7,6 +7,7 @@ import (
 	"github.com/curusarn/resh/pkg/records"
 )
 
+// RecordDistance prediction/recommendation strategy
 type RecordDistance struct {
 	history    []records.EnrichedRecord
 	DistParams records.DistParams
@@ -19,14 +20,17 @@ type strDistEntry struct {
 	distance float64
 }
 
+// Init see name
 func (s *RecordDistance) Init() {
 	s.history = nil
 }
 
+// GetTitleAndDescription see name
 func (s *RecordDistance) GetTitleAndDescription() (string, string) {
 	return "record distance (depth:" + strconv.Itoa(s.MaxDepth) + ";" + s.Label + ")", "Use record distance to recommend commands"
 }
 
+// GetCandidates see name
 func (s *RecordDistance) GetCandidates(strippedRecord records.EnrichedRecord) []string {
 	if len(s.history) == 0 {
 		return nil
@@ -52,12 +56,14 @@ func (s *RecordDistance) GetCandidates(strippedRecord records.EnrichedRecord) []
 	return hist
 }
 
+// AddHistoryRecord see name
 func (s *RecordDistance) AddHistoryRecord(record *records.EnrichedRecord) error {
 	// append record to front
 	s.history = append([]records.EnrichedRecord{*record}, s.history...)
 	return nil
 }
 
+// ResetHistory see name
 func (s *RecordDistance) ResetHistory() error {
 	s.Init()
 	return nil
diff --git a/pkg/strat/strat.go b/pkg/strat/strat.go
index d5b1b2c..28ac015 100644
--- a/pkg/strat/strat.go
+++ b/pkg/strat/strat.go
@@ -4,6 +4,7 @@ import (
 	"github.com/curusarn/resh/pkg/records"
 )
 
+// ISimpleStrategy interface
 type ISimpleStrategy interface {
 	GetTitleAndDescription() (string, string)
 	GetCandidates() []string
@@ -11,6 +12,7 @@ type ISimpleStrategy interface {
 	ResetHistory() error
 }
 
+// IStrategy interface
 type IStrategy interface {
 	GetTitleAndDescription() (string, string)
 	GetCandidates(r records.EnrichedRecord) []string