Editing PEEK and POKE (section)

=={{anchor|EXAM|FILL}}PEEK and POKE in other BASICs==
[[North Star Computers]], a vendor from the early 1980s, offered their own dialect of BASIC with their NSDOS [[operating system]]. Concerned about possible legal issues, they renamed the commands <code>EXAM</code> and <code>FILL</code>.{{Citation needed|date=October 2015}} There were also BASIC dialects that used the reserved words <code>MEMR</code> and <code>MEMW</code> instead.

[[BBC BASIC]], used on the [[BBC Micro]] and other [[Acorn Computers]] machines, did not feature the keywords ''PEEK'' and ''POKE'' but used the [[question mark]] symbol (?), known as ''query'' in BBC BASIC, for both operations, as a function and command.  For example:

<syntaxhighlight lang="bbcbasic">
> DIM W% 4  : REM reserve 4 bytes of memory, pointed to by integer variable W%
> ?W% = 42  : REM store constant 42; equivalent of 'POKE W%, 42'
> PRINT ?W% : REM print the byte pointed to by W%; equivalent of 'PRINT PEEK(W%)'
        42
</syntaxhighlight>

32-bit values could be POKEd and PEEKed using the [[exclamation mark]] symbol (!), known as ''pling'', with the least significant byte first ([[Endianness#Little-endian|little-endian]]).  In addition, the address could be offset by specifying either query or pling ''after'' the address and following it with the offset:

<syntaxhighlight lang="bbcbasic">
> !W% = &12345678   : REM ampersand (&) specifies hexadecimal
> PRINT ~?W%, ~W%?3 : REM tilde (~) prints in hexadecimal
        78        12
</syntaxhighlight>

Strings of text could be PEEKed and POKEd in a similar way using the [[Dollar sign]] ($).  The end of the string is marked with the [[Carriage return]] character (&amp;0D in [[ASCII]]); when read back, this terminating character is not returned.  Offsets cannot be used with the dollar sign.

<syntaxhighlight lang="bbcbasic">
> DIM S% 20          : REM reserve 20 bytes of memory pointed to by S%
> $S% = "MINCE PIES" : REM store string 'MINCE PIES', terminated by &0D
> PRINT $(S% + 6)    : REM retrieve string, excluding &0D terminator, and starting at S% + 6 bytes
PIES
</syntaxhighlight>