lyxtype and Format version

[subaochen]

hi all,


I have a very simple character style module as below:


Format 7
InsetLayout     CharStyle:Function
LyxType         charstyle
LabelString     function
LatexType       command
LatexName       function
Font
  Family        Sans
EndFont
Preamble
  \newcommand*{\function}[1]{{\texttt #1}}
EndPreamble
End


But when I change Format 7 to Format 49, lyx failed to load the module and said:
LyX: Unknown InsetLayout tag [around line 10 of file 
~/.lyx/layouts/programming.module current token: 'charstyle' context: '']


I have ever tried Format version up to 34, the module works well.


So, where can I get the full information about Format version and their related 
tag? Thanks in advance!


--
Best regards,

Su Baochen