diff --git a/src/GamCommands.txt b/src/GamCommands.txt
index ae754f87..31823613 100644
--- a/src/GamCommands.txt
+++ b/src/GamCommands.txt
@@ -78,6 +78,7 @@ Named items
 <CalendarColorIndex> ::== <Number in range 1-24>
 <CalendarItem> ::= <EmailAddress>|<String>
 <ClientID> ::= <String>
+<CollaboratorItem> ::= <EmailAddress>|<UniqueID>|<String>
 <CourseAlias> ::= <String>
 <CourseID> ::= <Number>|d:<CourseAlias>
 <CourseParticipantType> ::= teacher|teachers|student|students
@@ -103,12 +104,14 @@ Named items
 <GroupItem> ::= <EmailAddress>|<UniqueID>|<String>
 <GuardianItem> ::= <EmailAddress>|<UniqueID>|<String>
 <GuardianInvitationID> ::= <String>
+<HoldItem> ::= <UniqueID>|<String>
 <HostName> ::= <String>
 <Key> ::= <String>
 <LabelID> ::= <String>
 <LabelName> ::= <String>
 <LabelReplacement> ::= <String>
 <Marker> ::= <String>
+<MatterItem> ::= <UniqueID>|<String>
 <MobileID> ::= <String>
 <MobileItem> ::= <MobileID>|(query:<QueryMobile>)|(query <QueryMobile>)
 <Name> ::= <String>
@@ -133,6 +136,7 @@ Named items
 <QueryPrinter> ::= <String> See: https://developers.google.com/cloud-print/docs/appInterfaces#search
 <QueryPrintJob> ::= <String> See: https://developers.google.com/cloud-print/docs/appInterfaces#parameters_3
 <QueryUser> :: = <String> See: https://developers.google.com/admin-sdk/directory/v1/guides/search-users
+<QueryVaultCorpus> ::= <String> See: https://developers.google.com/vault/reference/rest/v1/matters.holds#CorpusQuery
 <RequestID> ::= <String>
 <ResourceID> ::= <String>
 <RoleItem> ::= <UniqueID>|<String>
@@ -397,12 +401,14 @@ Items, separated by spaces, with spaces or commas in the items themselves: "'it
 
 <ACLList> ::== "<ACLScope>(,<ACLScope>)*"
 <CalendarList> ::= "<CalendarItem>(,<CalendarItem>)*"
+<CollaboratorList> ::= "<CollaboratorItem>(,<CollaboratorItem>)*"
 <CourseAliasList> ::= "<CourseAlias>(,<CourseAlias>)*"
 <CourseIDList> ::= "<CourseID>(,<CourseID>)*"
 <CrOSFieldNameList> ::= "<CrOSFieldName>(,<CrOSFieldName>)*"
 <CrOSList> ::= "<CrOSID>(,<CrOSID>)*"
 <DriveFileList> ::= "<DriveFileItem>(,<DriveFileItem>)*"
 <EmailAddressList> ::= "<EmailAddress>(,<EmailAddress>)*"
+<EmailItemList> ::= "<EmailItem>(,<EmailItem>)*"
 <EventIDList> ::= "<EventID>(,<EventID>)*"
 <FileFormatList> ::= "<FileFormat>(,<FileFormat)*"
 <FilterIDList> ::= "<FilterID>(,<FilterID>)*"
@@ -410,6 +416,7 @@ Items, separated by spaces, with spaces or commas in the items themselves: "'it
 <GroupList> ::= "<GroupItem>(,<GroupItem>)*"
 <GuardianStateList> ::= "<GuardianState>(,<GuardianState>)*"
 <LabelNameList> ::= "<LabelName>(,<LabelName)*"
+<MatterItemList> ::= "<MatterItem>(,<MatterItem>)*"
 <MembersFieldNameList> ::= "<MembersFieldName>(,<MembersFieldName>)*"
 <MobileList> ::= "<MobileId>(,<MobileId>)*"
 <OrgUnitList> ::== "<OrgUnitPath>(,<OrgUnitPath>)*"
@@ -480,7 +487,7 @@ Item attributes
 	(source <String> <URL>)|(privateproperty <PropertyKey> <PropertyValue>)|(sharedproperty <PropertyKey> <PropertyValue>)|
 	(recurrence <RRULE, EXRULE, RDATE and EXDATE line>)|
 	(start allday <Date>)|(start <Time>)|(end allday <Date>)|(end <Time>)|(timezone <Timezone>)|
-	(noreminders|(reminder email|popup|sms <Number>))|
+	(noreminders|(reminder <Number> email|popup|sms))|
 	(colorindex|colorid <EventColorIndex>)
 
 <GroupAttributes> ::=
@@ -808,6 +815,23 @@ gam print printjobs [todrive] [printer|printerid <PrinterID>]
 	[owner|user <EmailAddress>]
 	[limit <Number>]
 
+gam create vaulthold|hold corpus drive|groups|mail matter <MatterItem> [name <String>] [query <QueryVaultCorpus>]
+	[(accounts|groups|users <EmailItemList>) | (orgunit|ou <OrgUnit>)]
+	[starttime <Date>|<DateTime>] [endtime <Date>|<DateTime>] 
+gam delete vaulthold|hold <HoldItem> matter <MatterItem>
+gam update vaulthold|hold <HoldItem> matter <MatterItem> [query <QueryVaultCorpus>]
+	[([addaccounts|addgroups|addusers <EmailItemList>] [removeaccounts|removegroups|removeusers <EmailItemList>]) | (orgunit|ou <OrgUnit>)]
+	[starttime <Date>|<DateTime>] [endtime <Date>|<DateTime>] 
+gam info vaulthold|hold <HoldItem> [matter <MatterItem>]
+gam print vaultholds|holds [todrive] [matters <MatterItemList>]
+
+gam create vaultmatter|matter [name <String>] [description <string>]
+	[collaborator|collaborators <CollaboratorList>]
+gam update vaultmatter|matter <MatterItem> [action close|reopen|delete|undelete] [name <String>] [description <string>]
+	[addcollaborator|addcollaborators <CollaboratorList>] [removecollaborator|removecollaborators <CollaboratorList>]
+gam info vaultmatter|matter <MatterItem>
+gam print vaultmatters|matters [todrive] [view basic|full]
+
 gam <UserTypeEntity> delete|del asp|asps|applicationspecificpasswords <AspID>
 gam <UserTypeEntity> show asps|asp|applicationspecificpasswords