The following options are available for processing lists:
!! <command>
!? <command>
! <command>
? defaultlayer : <layer>
? defaultlayer :
? defaultversion : <vmake_version>
? defaultversion :
? distribute : <list>
? error: <error_message>
? propagate : <variable>[=<value>]
? require : <target>
ascii
binary
debug|d
distrib
nocomfile
nodistrib
remake
shrglob
uncond