32         28          16         12          8          4           0
 | dcomp:4 |     ...    | unass:4  | checks:4 | diags1:4 | linenos:4 |
                                     checksp:3

X'1FFF1111'

LINENOS   0 or 1
DIAGS1    0 (none) 1 (plant diags)
CHECKS    0 (none) 1 (plant checks)
CHECKSP   0 (none)  #0 (perm checks?)
UNASS     0 (none) 1 (plant unassigned checks)
DCOMP      0 (none) #0 decompile

SW(31):                      ! %CONTROL CONST
         %IF A(P+1)=9 %THEN J=A(P+2) %ELSE FROMAR4(P+2,J)
         K=J&15; LINENOS=K %UNLESS K=15
         K=J>>4&15; DIAGS1=K %UNLESS K=15
         K=J>>8&15
         CHECKS=K %UNLESS K=15
         CHECKSP=K&14 %UNLESS K=15
         K=J>>12&15
         UNASS=K %UNLESS K=15
         K=J>>28
         DCOMP=K %UNLESS K=15
         ->L1