Important environment variables for CATIA V5
 
Go to All Programs -> CATIA -> Tools -> Environment editor in admin login and add these variables through “contextual menu -> New variable” option. Re-start CATIA V5 to see the difference.
 
For disabling license error messages at startup,

CATLM_ODTS=1

 
For accessing Wilson's spline curves,

L_WILSON_LAN=1
 
For accessing the Rolling Offset option in GSD,

CGM_ROLLINGOFFSET=1
 
For optimizing IGES export memory,

TAILLE_MEMOIRE_CHOISIE=1
 
For disabling product at startup,

CATNoStartDocument=no
 

For disabling sky background at startup,

CNEXTBACKGROUND = no
 
For disabling display of planet at startup,

CNEXTSPLASHSCREEN = no
 
For displaying Catia’s logs in command windows,

CNEXTOUTPUT = console