+"buffer" or "vcs". Arguments and outputs vary by type.
+
+date: argument of this type of InsetInfo is either a fixed date type of
+ "long" (long localized date, with weekday, as provided by QLocale),
+ "short" (short localized date, with two-digit year, as provided by QLocale),
+ "loclong" (long localized date, without weekday, defined in languages),
+ "locmedium" (medium localized date, defined in languages),
+ "locshort" (short localized date, with four-digit year, defined in languages),
+ "ISO" (ISO-conforming date)
+ or a custom date using the QDate syntax.
+ The output is a localized formatted (current) date.
+
+moddate: Same as date.
+ The output is a localized formatted date of last file modification (saving).
+
+fixdate: Same as date. A fixed date (in ISO format) is prepended to the argument,
+ delimited by '@'.
+ The output is a localized formatted fix date.
+
+time: argument of this type of InsetInfo is either a fixed time type of
+ "long" (long localized time, as provided by QLocale),
+ "short" (short localized time, as provided by QLocale),
+ "ISO" (ISO-conforming time)
+ or a custom date using the QTime syntax.
+ The output is a localized formatted (current) time.
+
+modtime: Same as time.
+ The output is a localized formatted time of last file modification (saving).
+
+fixtime: Same as time. A fixed time (in ISO format) is prepended to the argument,
+ delimited by '@'.
+ The output is a localized formatted fix time.
+
+shortcuts: argument is the name of the LFUN such as "math-insert \alpha".
+ The syntax is the same as what is used in the bind and ui files.
+ The output of this inset is all shortcuts for this LFUN separated by comma.