{{htmlmetatags>metatag-robots=() 
metatag-title=(MR_DB1 | MIDRES library) 
metatag-keywords=(Midres,Library,Graphics,Commodore 64,Commodore VIC20,Commodore 16,API) 
metatag-description=(Index of the first screen for double buffering.)
metatag-media-og:image=(:midres-logo-fb.png)
metatag-og:title=(MR_DB1 | MIDRES library) 
metatag-og:description=(Index of the first screen for double buffering.)
}} 

====== MR_DB1 =======

Index of the first screen for "double buffering".

===== Declaration =====

   extern mr_screen MR_DB1;

===== Description =====

This variable contains the number of the screen used as first, in the two needed for double buffering.

===== See also =====

   * ''[[:midres_library:reference:mr_db2|MR_DB2]]''
   * ''[[:midres_library:reference:mr_screen|MR_SCREEN]]''

===== Example =====

[[:midres_library|{{ :midres-logo.png?nolink&600 |}}]]