diff --git a/admin/sync/exercices.go b/admin/sync/exercices.go
index 7d5069d3..28383804 100644
--- a/admin/sync/exercices.go
+++ b/admin/sync/exercices.go
@@ -9,6 +9,7 @@ import (
 	"srs.epita.fr/fic-server/libfic"
 )
 
+// getExercices returns all exercice directories existing in a given theme, considering the given Importer.
 func getExercices(i Importer, theme fic.Theme) ([]string, error) {
 	var exercices []string
 
@@ -25,6 +26,7 @@ func getExercices(i Importer, theme fic.Theme) ([]string, error) {
 	return exercices, nil
 }
 
+// findResolutionMovie searchs a resolution movie across a given exercice path.
 func findResolutionMovie(i Importer, exPath string) (videoURI string, err error) {
 	var files []string
 
@@ -42,6 +44,7 @@ func findResolutionMovie(i Importer, exPath string) (videoURI string, err error)
 	return
 }
 
+// SyncExercices imports new or updates existing exercices, in a given theme.
 func SyncExercices(i Importer, theme fic.Theme) []string {
 	var errs []string
 
@@ -162,6 +165,7 @@ func SyncExercices(i Importer, theme fic.Theme) []string {
 	return errs
 }
 
+// ApiListRemoteExercices is an accessor letting foreign packages to access remote exercices list.
 func ApiListRemoteExercices(theme fic.Theme, _ []byte) (interface{}, error) {
 	return getExercices(GlobalImporter, theme)
 }
diff --git a/admin/sync/file.go b/admin/sync/file.go
index 3afac7cb..4b6195d3 100644
--- a/admin/sync/file.go
+++ b/admin/sync/file.go
@@ -24,15 +24,22 @@ type Importer interface {
 	exists(filename string) bool
 	// toURL gets the full path/URL to the given file, the Importer will look internaly (used for debuging purpose).
 	toURL(filename string) string
-	// importFile imports the file at the given URI
+	// importFile imports the file at the given URI, inside the global FILES/ directory.
+	// Then calls back the next function, with the downloaded location and the original URI.
+	// Callback return is forwarded.
 	importFile(URI string, next func(string, string) (interface{}, error)) (interface{}, error)
+	// getFile write to the given buffer, the file at the given location.
 	getFile(filename string, writer *bufio.Writer) error
+	// listDir returns a list of the files and subdirectories contained inside the directory at the given location.
 	listDir(filename string) ([]string, error)
+	// stat returns many information about the given file: such as last modification date, size, ...
 	stat(filename string) (os.FileInfo, error)
 }
 
+// GlobalImporter stores the main importer instance to use for global imports.
 var GlobalImporter Importer
 
+// getFile helps to manage huge file transfert by concatenating splitted (with split(1)) files.
 func getFile(i Importer, URI string, writer *bufio.Writer) error {
 	// Import file if it exists
 	if i.exists(URI) {
@@ -67,7 +74,7 @@ func getFile(i Importer, URI string, writer *bufio.Writer) error {
 	return errors.New(fmt.Sprintf("%q: no such file or directory", URI))
 }
 
-// getFileContent
+// getFileContent retrieves the content of the given text file.
 func getFileContent(i Importer, URI string) (string, error) {
 	cnt := bytes.Buffer{}
 
diff --git a/admin/sync/full.go b/admin/sync/full.go
index b8d4c348..19b3ae76 100644
--- a/admin/sync/full.go
+++ b/admin/sync/full.go
@@ -13,8 +13,10 @@ import (
 	"srs.epita.fr/fic-server/settings"
 )
 
+// oneDeepSync ensure there is no more than one running deep sync.
 var oneDeepSync sync.Mutex
 
+// SyncDeep performs a recursive synchronisation: from themes to challenge items.
 func SyncDeep(i Importer) (errs map[string][]string) {
 	oneDeepSync.Lock()
 	defer oneDeepSync.Unlock()
diff --git a/admin/sync/importer_cloud.go b/admin/sync/importer_cloud.go
index 07b8406f..70811e6d 100644
--- a/admin/sync/importer_cloud.go
+++ b/admin/sync/importer_cloud.go
@@ -12,12 +12,20 @@ import (
 	"github.com/studio-b12/gowebdav"
 )
 
+// CloudImporter implements an Importer, where files to imports are located
+// remotely, under a WebDAV server (such as sabre/dav, owncloud, ...).
 type CloudImporter struct {
+	// baseDAV is the URL (most probably http or https one) to the root directory.
+	// It should contains all themes, in separated directories.
 	baseDAV url.URL
+	// username is the username used to perform authentication through BasicAuth.
 	username string
+	// password is the password used to perform authentication through BasicAuth.
 	password string
 }
 
+// NewCloudImporter registers a new object CloudImporter, as the URL conversion
+// can returns errors.
 func NewCloudImporter(baseDAV string, username string, password string) (*CloudImporter, error) {
 	if r, err := url.Parse(baseDAV); err != nil {
 		return nil, err
diff --git a/admin/sync/importer_localfs.go b/admin/sync/importer_localfs.go
index fe8c6530..6fe32cfa 100644
--- a/admin/sync/importer_localfs.go
+++ b/admin/sync/importer_localfs.go
@@ -7,8 +7,13 @@ import (
 	"path"
 )
 
+// LocalImporter implements an Importer, where files to imports are located
+// inside a local directory from your filesystem.
 type LocalImporter struct {
+	// Base is the root directory used by the LocalImporter. It should contains all themes.
 	Base    string
+	// Symlink changes the normal file copy/concatenate behaviour to symlink/concatenate.
+	// If enable, your base directory must be accessible by the frontend processus as it will follow the symlink.
 	Symlink bool
 }
 
diff --git a/admin/sync/themes.go b/admin/sync/themes.go
index 7126c2cf..063fd1de 100644
--- a/admin/sync/themes.go
+++ b/admin/sync/themes.go
@@ -9,6 +9,7 @@ import (
 	"github.com/julienschmidt/httprouter"
 )
 
+// getThemes returns all theme directories in the base directory.
 func getThemes(i Importer) ([]string, error) {
 	var themes []string
 
@@ -25,6 +26,7 @@ func getThemes(i Importer) ([]string, error) {
 	return themes, nil
 }
 
+// getAuthors parses the AUTHORS file.
 func getAuthors(i Importer, tname string) ([]string, error) {
 	if authors, err := getFileContent(i, path.Join(tname, "AUTHORS.txt")); err != nil {
 		return nil, err
@@ -33,6 +35,7 @@ func getAuthors(i Importer, tname string) ([]string, error) {
 	}
 }
 
+// SyncThemes imports new or updates existing themes.
 func SyncThemes(i Importer) []string {
 	var errs []string
 
@@ -73,10 +76,12 @@ func SyncThemes(i Importer) []string {
 	return errs
 }
 
+// ApiListRemoteThemes is an accessor letting foreign packages to access remote themes list.
 func ApiListRemoteThemes(_ httprouter.Params, _ []byte) (interface{}, error) {
 	return getThemes(GlobalImporter)
 }
 
+// ApiListRemoteTheme is an accessor letting foreign packages to access remote main theme attributes.
 func ApiGetRemoteTheme(ps httprouter.Params, _ []byte) (interface{}, error) {
 	return getAuthors(GlobalImporter, ps.ByName("thid"))
 }
diff --git a/libfic/member.go b/libfic/member.go
index 66921f19..f517af0a 100644
--- a/libfic/member.go
+++ b/libfic/member.go
@@ -34,6 +34,7 @@ func (t Team) GetMembers() ([]Member, error) {
 	}
 }
 
+// AddMember creates and fills a new struct Member and registers it into the database.
 func (t Team) AddMember(firstname string, lastname string, nickname string, company string) (Member, error) {
 	if res, err := DBExec("INSERT INTO team_members (id_team, firstname, lastname, nickname, company) VALUES (?, ?, ?, ?, ?)", t.Id, firstname, lastname, nickname, company); err != nil {
 		return Member{}, err
@@ -44,6 +45,7 @@ func (t Team) AddMember(firstname string, lastname string, nickname string, comp
 	}
 }
 
+// GainMember associates (or registers, it if it doesn't exists yet) a member to the team.
 func (t Team) GainMember(m Member) error {
 	if m.Id == 0 {
 		if res, err := DBExec("INSERT INTO team_members (id_team, firstname, lastname, nickname, company) VALUES (?, ?, ?, ?, ?)", t.Id, m.Firstname, m.Lastname, m.Nickname, m.Company); err != nil {
@@ -62,6 +64,7 @@ func (t Team) GainMember(m Member) error {
 	}
 }
 
+// Update applies modifications back to the database.
 func (m Member) Update() (int64, error) {
 	if res, err := DBExec("UPDATE team_members SET firstname = ?, lastname = ?, nickname = ?, company = ? WHERE id_member = ?", m.Firstname, m.Lastname, m.Nickname, m.Company, m.Id); err != nil {
 		return 0, err
@@ -72,6 +75,7 @@ func (m Member) Update() (int64, error) {
 	}
 }
 
+// Delete the member from the database.
 func (m Member) Delete() (int64, error) {
 	if res, err := DBExec("DELETE FROM team_members WHERE id_member = ?", m.Id); err != nil {
 		return 0, err
@@ -82,6 +86,7 @@ func (m Member) Delete() (int64, error) {
 	}
 }
 
+// ClearMembers deletes members in the team.
 func (t Team) ClearMembers() (int64, error) {
 	if res, err := DBExec("DELETE FROM team_members WHERE id_team = ?", t.Id); err != nil {
 		return 0, err