gEDA-user: magic command for footprint= reverse engineering ;-)

[Karel Kulhavý <clock-atMUNGEDtwibright_dot_com>]

Try one of the three following commands (each is two lines!) to get
a list 

( cd `locate common.m4 | sed -e 's/common.m4//g'`; echo dumpdef | \
m4 common.m4 - 2>&1 | less )

( cd /usr/local/share/pcb/m4/; echo dumpdef | \
m4 common.m4 - 2>&1 | less )

( cd /usr/share/pcb/m4/; echo dumpdef | \
m4 common.m4 - 2>&1 | less )

Then in the less program type "/^PKG_" (without the quotes) and press 'n'
repeatedly.

For example if your find PKG_MTA100_9 then you can use
footprint=PKG_MTA100_9

or the often used PKG_R025 means footprint=R025

Macros that use $4, $5 etc. take positional parameters and their usage
in footprint= is with spaces and more parameters:

PKG_J:  PKG_DIL(`$1', `$2', `$3', `$4', `$5', 100, 60, 28)

here you write footprint=PKG_J 14 300 and you'll get something meaningful.

Cl<