This command is for showing PML Forms. List of forms will vary depending on the customization done in your office / organization. Still if you want a list then one way will be to open the pml.index files in PMLLIB folder and then copy all filenames that have file extension as .pmlfrm.
[FONT=arial]thank you for your answer, in fact I use "show !! cdcomp" to open the old window piping components, and I wanted to know if there was a command to have the old command "connect branch"