DCL:MATH1:SYSLIB : Internal Variable Management and Message Output

2.3 List of Functions

return_value = NumRu::DCL.lchreq(ch1,ch2) Compares two character strings (case non-sensitive)

return_value = NumRu::DCL.iufopn() Returns the number of the available I/O device

`return_value = NumRu::DCL.lchreq(ch1,ch2)`	Compares two character strings (case non-sensitive)
`return_value = NumRu::DCL.iufopn()`	Returns the number of the available I/O device