Apple IIe - Page 211

Cassette and Disk Storage with the Apple lie 211
Configuration
BLOAD filename [ , Axxx] , Lxxx, [ Sx , Vx, Dx ]
The address
parameter (A) is optional in BLOAD . If A is not
specified, the file will be loaded at the address indicated when
the file was saved.
BRUN
BRUN performs a BLOAD, after which it performs a machine
language JMP instruction to the address indicated by A. This will
begin execution of the machine language program.
Configuration
BRUN filename [, Axxx ], Lxxx, [ Sx , Vx, Dx J
Using DOS Commands in Programs
In certain situations, you may wish to use DOS commands within
BASIC programs. A DOS command can be included within a
BASIC
program by placing the command within a PRINT
statement and
prefixing the command with the Control-D
character (ASCII Code 4) .
An
example of the usage of a DOS command within an Applesoft
program is given below:
10 D$ = CHR$ (4)
20 PRINT D$; " CATALOG"
The preceding program will generate a catalog listing.
Note that we defined D$ as Ctrl-D using the CHR$ function .
Since actually
entering Ctrl-D via the keyboard does not
generate a printing character, this is the preferred method for
including Ctrl-D in a BASIC statement.