DCL:MATH1:SYSLIB : Internal Variable Management and Message Output
| GL p GET(CP,IPARA) | Inquires about an internal variable |
| GL p SET(CP,IPARA) | Changes an internal variable |
| GL p STX(CP,IPARA) | Changes an internal variable (allows change through a runtime option) |
| MSGDMP(CLEV,CSUB,CMSG) | Prints a message |
| RTPGET(CPFIX,CP,IPARA,N) | Gets internal variables from the runtime option |
| RTCGET(CPFIX,CP,CPARA,N) | Gets internal variables (character variables) from the runtime option |
| CFSRCH(CPL,NP,CFL,NF,CFN) | Searches for an existing file name from a combination of the list of the header and tail of a pathname |