Editing PDP-10 (section)

===Programming languages===
DEC maintained DECsystem-10 [[Fortran#FORTRAN IV|FORTRAN IV]] (F40) for the PDP-10 from 1967 to 1975<ref>{{cite web |last1=Digital Equipment Corp |title=DECsystem-10 FORTRAN IV (F40) Programmers Reference Manual |url=https://github.com/PDP-10/f40/blob/master/doc/DEC-10-LFLMA-B-D%20FORTRAN%20IV%20(F40)%20Programmer's%20Reference%20Manual.pdf |website=Github |publisher=Digital Equipment Corporation |access-date=15 April 2022}}</ref>

MACRO-10 (assembly language macro compiler), COBOL, BASIC and AID were supported under the multi processing and swapping monitors.<ref>{{Cite web |last=Equipment |first=Digital |date=1968 |title=PDP-10 Reference Handbook |url=https://bitsavers.org/pdf/dec/pdp10/1970_PDP-10_Ref/1970PDP10Ref_Part0.pdf |website=bitsavers.org }}</ref>

In practice a number of other programming environments were available including LISP and SNOBOL at the Hatfield Polytechnic site around 1970.