What does APPLCSF stand for ?

APPLCSF stands for Application Common Support/Script Files. In a freshly installed Oracle E-Business Suite environment 11i/R12,
if you cd to $APPLCSF, it will take you to $COMMON_TOP/admin/ directory which has the following subdirectories:

11i fresh installation
==============
cd $APPLCSF  ==> $COMMON_TOP/admin
outbound
inbound
install
out
log
scripts



R12 fresh installation
===============
[applmgr@apps log]$ cd $APPLCSF
[applmgr@apps conc]$ pwd
/u02/inst/apps/PROD_apps/logs/appl/conc
[applmgr@apps conc]$ ls -ltrh
total 16K
drwxr-xr-x  2 applmgr dba 4.0K Mar  1 19:12 outbound
drwxr-xr-x  2 applmgr dba 4.0K Mar  1 19:12 inbound
drwxr-xr-x  2 applmgr dba 4.0K Mar  1 20:22 out
drwxr-xr-x  2 applmgr dba 4.0K Mar  2 04:46 log
[applmgr@apps conc]$ d