BASIC Conventions
BASIC interpreters written in the Seventies tended to "do odd things odd ways." For example, on the Apple II, a programmer could embed a DOS command into a program via PRINT, when prefaced by the character string CHR$(4). PEEK and POKE could be used in various BASICs to examine memory content or change it, or even to create an ad hoc machine language program and then run it. System/34 BASIC tends to stay away from these odd conventions; however, the programmer could call for the Alarm (a buzzing sound made by the terminal) via PRINT CHR$(7).
BASIC statements are expected to be entered in capital letters, and while the operator can press Cmd2 to use lowercase, the BASIC interpreter will convert non-comment keywords into uppercase.
So that BASIC could be useful in a midrange computing environment, IBM added extensions to the language that were specific to the hardware and software conventions of the IBM System/34 Family, such as the WORKSTN file, support for indexed, direct, and sequential disk files, the ability to open and close multiple printer files, and LOAD/SAVE from libraries on the fixed disk.
Read more about this topic: System/34 BASIC
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