BRANCH: Specify the Entry to the Macro

BRANCH=(YES,SUP): Requests the branch entry. The caller must be in supervisor state. Protect key checking is bypassed.
If BRANCH=YES is coded, an 18-word save area must be supplied. No lock can be held on entry to CVAF. SRB mode is not allowed.
BRANCH=YES: Equivalent to BRANCH=(YES,SUP), because SUP is the default when YES is coded. Protect key checking is bypassed.
BRANCH=(YES,PGM): Requests the branch entry. The caller must be APF authorized and in problem state. Protect key checking is bypassed.
BRANCH=NO: Requests the SVC entry. The caller must be APF authorized if any output operations are requested. Protect key checking is performed. This is the default.