Display the string to the terminal, do not send to the mud.   Useful for
status, warnings, etc.
example:
#action {%0 ultraslays you} {#showme {###### argh! we were ultraslayed ######}}
#chr _ESC 27
#al showg #showme {${_ESC}[32m%%0${_ESC}[2;37;0m}
showg WHAT COLOR IS IT?                  <== show message in green