here for example:
[FTP_Custom_Commands]
## SITE <trigger> <parameters>
#
trigger = !file # Show file
trigger = @string # Alias
trigger = EXEC script.exe # Execute file.exe
trigger = %EXEC script.exe # Execute file.exe (translate cookies)
trigger = TCL script.itcl # Execute file.itcl
#
## Examples
welcome = !..\text\ftp\welcome.msg
rehash = @config rehash
exec = EXEC ..\scripts\exec.bat
myinfo = %TCL ..\scripts\whoami.itcl %[$user]
cat = TCL ..\scripts\showfile.itcl
#
EXEC = ..\scripts\Exec\exec.bat
TCL = TCL ..\scripts\EggTalk\bottalk.itcl
new = TCL ..\scripts\newdir\OnSiteNew.itcl
undupe = TCL ..\scripts\newdir\OnSiteUndupe.itcl
dupe = TCL ..\scripts\newdir\OnSiteDupe.itcl
version = TCL ..\scripts\version\OnSiteVersion.itcl