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Has anyone had any luck getting Cadence to release a full list of all the ENV variables that Allegro accepts. There is not a complete list in any of the literature that I can find anywhere. The ""best"" solution that I have received from Cadence so far is: Search the database for similar known issues to find solutions to specific problems. Like most of us, I do not have the time to wade through that sea of information. Wouldn't it be nice to see a complete list to include unlisted variable so that we can investigate their applications for ourselves?

REF:
PCR: 752880
Title: Enhance Allegro Docs to have undocumented env variables Reqpriority - 1 Type - Enhancement

Good luck finding these examples in the help files:
Example:

set display_norefdes - turns off REFDES visibility when moving parts

set acon_oldcmd = true - restores old routing style in acon commands

Sir,

   I completed PCB layout in Allegro PCB Editor v16.3, and now i need to add 1 jumper into the that layout how can i do that one? 

 To create a Jumper symbol look at <your_install_dir>\doc\algrolibdev\algrolibdev.pdf page 149 and to use a jumper whilst routing look at  <your_install_dir>\doc\algroroute\algroroute.pdf p196.