xt52a     headr
     EXLINK    equ  840   139 I XLINKF ENTRY ADDRESS
     USER1     equ  876   127 R USER FUNCTION 01 ENTRY ADDRESS
     SUBSC     equ  909   116 SUBSCRIPT
     OBLIST    equ  912   115 I/O LIST AND NOT LIMITED FORMAT
     SX2       equ  927   
     CONBOT    equ  930   BOTTOM OF CONSTANTS - 1  FIXWD
     ARYBOT    equ  933   BOTTOM OF ARRAYS - 1     FLTWD
     BEG52A    equ  934   V3M4