This structure is used in fn 4b01H (load a program without executing).

ExecParamRec
Offset Size Contents
                                                                 
+0      2  wEnvSeg      segment of environment for child (0000=current)
+2      4  pfCmdTail    address of command line text to place at PSP:0080
+6      4  pfrFCB_1     address of an FCB to be placed at PSP:005c
+0ah     4  pfrFCB_2     address of an FCB to be placed at PSP:006c
+0eh     4  lCsIp        Dword to receive program entry address
+12h     4  lSsSp        Dword to receive program stack pointer address
22               length of an ExecLoadRec

wEnvSeg  and...
pfCmdTail  and...
pfrFCB_1  and...
pfrFCB_2  are as described for ExecParamRec.

lCsIp  is filled with the 32-bit address that should be used as the
entry point for the program.  DOS calculates this as it loads
the program.  Use a FAR JMP to this address to begin executing
the child.
lSsSp  is filled with the 32-bit address that should be used for the
stack segment and stack pointer for the program (as calculated
by DOS).

- -

Load Program Record (ExecLoadRec)