====== CALL ======
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Explicitely invokes a subroutine, optionally with arguments.

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**Implemented by:** [[:basics:Dartmouth:dartmouth6]], [[:basics:ANSI:ansifull]], [[:basics:a2int:]], [[:basics:Applesoft:]], [[:basics:CBM:Simons1]], [[:basics:BBC:]], [[:basics:GWBASIC:]], [[:basics:bwbasic:]], [[:basics:bwbasic:bw32]], [[:basics:VBDOS:]], [[:basics:FreeBASIC:]]

**With variations:** [[:basics:Applesoft:tasc]] (rejects any extra text following the call), [[:basics:TI994:]] (used to call subprograms CHAR, CLEAR, COLOR, GCHAR, HCHAR, JOYST, KEY, SCREEN, SOUND, VCHAR), [[:basics:MSX:]] (for cartridge programs), [[:basics:MSX:msxdisk]] (extended usage with FORMAT, SYSTEM and VERIFY), [[:basics:msqb:QBasic]] (also as CALL ABSOLUTE), [[:basics:msqb:qb4.5]] (as CALL ABSOLUTE and CALL INTERRUPT), [[:basics:ugBASIC:]] (invokes a BASIC procedure)

**Also written as: ** 

===== Usage =====
/* For inline examples of syntax, write the keyword between '' and '' (two single quotes) */


==== Variations ====

The [[:basics:msx:msxdisk|MSX DiskBASIC extension]] implements the following CALL subcommands:

  * **CALL FORMAT** - formats the disk found in the drive
  * **CALL SYSTEM** - exits to MSXDOS, if BASIC had been started from it
  * **CALL VERIFY** - with ON or OFF, activates or deactivates a writing check mechanism, somehow similar to Applesoft's [[VERIFY]] command
 


===== Examples =====
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  Below is an example of a code block, using GeSHi syntax highlighting for //gwbasic//. Other styles of interest might be
  //basic4gl//, //blitzbasic//, //freebasic//, //gambas//, //locobasic//, //purebasic//, //qbasic//, //sdlbasic//,
  //thinbasic//, //vb//, //vbnet//, //xbasic// or //zxbasic//. 

  <code gwbasic>
  10 PRINT "HELLO"
  </code>
*/



===== Comments =====
/* Origin of the keyword, opinions, history... */


===== Related keywords =====
/* Keywords that are often or always used along this one */


===== Similar keywords =====
/* Keywords with the same or similar functionality found in other versions of BASIC */


===== In other languages... =====
/* For parallels and comparisons with other modern-day languages */


===== References =====
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