{{htmlmetatags>metatag-description:(ICL George 3 and George 4 GIN macro: DO)}}
====== DO ======
(GIN Macro)

**Defined in:** [[george:source:IFMACS|IFMACS]]

**Used in:** [[george:source:CONSET864|CONSET864]], [[george:source:FORMLOOP865|FORMLOOP865]], [[george:source:IDFCONF867|IDFCONF867]], [[george:source:IPBLISTA867|IPBLISTA867]], [[george:source:IPBLISTD867|IPBLISTD867]], [[george:source:LISTOPEN867|LISTOPEN867]], [[george:source:LISTRING864|LISTRING864]], [[george:source:MESSA|MESSA]], [[george:source:MESSAA|MESSAA]], [[george:source:MESSAB|MESSAB]], [[george:source:MESSB|MESSB]], [[george:source:MESSCF|MESSCF]], [[george:source:MESSCH|MESSCH]], [[george:source:MESSDB|MESSDB]], [[george:source:OPER864|OPER864]], [[george:source:OPERA864|OPERA864]], [[george:source:OPERAPP864|OPERAPP864]], [[george:source:OPERIN867|OPERIN867]], [[george:source:PCTBEGIN863|PCTBEGIN863]], [[george:source:SHOWCOMM864|SHOWCOMM864]], [[george:source:WA864|WA864]], [[george:source:WHATPROP865|WHATPROP865]], [[george:source:WHATRVS867|WHATRVS867]], [[george:source:WHATRVSA867|WHATRVSA867]], [[george:source:WLA867|WLA867]], [[george:source:WLAA867|WLAA867]], [[george:source:WLB867|WLB867]], [[george:source:WLC867|WLC867]], [[george:source:WLD864|WLD864]], [[george:source:WLE862|WLE862]], [[george:source:WLF862|WLF862]], [[george:source:WLG862|WLG862]], [[george:source:WLOUT865|WLOUT865]]

<code - DO.mac.txt>
 6R#=    [   
 6RRW    [   
 6S?G    [??? DO SECT DEVT FGN 1 DOC 
 6SR6    [   
 6T=Q    #MAC           DO   
 6TQB    [              ==   
 6W=2    [   
 6WPL    [ (FOLLOWING 'WHILE')   
 6X9=    [ ENSURES:  
 6XNW    [     'DO' NOT FOUND
 6Y8G    [     'OR' NOT EXPECTED 
 6YN6    [     CURRENT STUCTURE = ITERATION  
 6^7Q    [ SETS: 
 6^MB    [     'DO' FOUND
 7272    [ COMPILES: 
 72LL    [     LABEL FOR START OF ITERATION BODY 
 736=    [   
 73KW    [ (NOT FOLLOWING 'WHILE')   
 745G    [ SETS: 
 74K6    [     DEPTH UP, ADVANCES THE THREE STACK IDENTIFIERS
 754Q    [     CURRENT STUCTURE = ITERATION  
 75JB    [     'DO' FOUND
 7642    [     'OR' NOT EXPECTED 
 76HL    [ COMPILES: 
 773=    [     LABEL FOR START OF ITERATION  
 77GW    [   
 782G    #UNS           NESTDEPTH
 78G6    (   
 78^Q    #SKI           NESTFLAG^NESTREASON&1<1$1
 79FB    (                                  [IF FOLLOWS 'WHILE'  
 79^2          FLAGTEST DO,0,NOT,0,,A CATASTROPHE
 7=DL    #ALT           NESTFLAG=NESTFLAG^1 [SET 'DO'
 7=Y=          STRUCTURE 0,CHECK 
 7?CW    #SKI           NESTDEPTH/9  
 7?XG    (   
 7#C6    #ALT           20?=NESTDEPTH-9  
 7#WQ          NESTLABEL NIF6,FREE   
 7*BB    #EXI
 7*W2    )   
 7B*L    #ALT           20?=NESTDEPTH-1  
 7BT=          NESTLABEL NIF1,FREE   
 7C#W    #EXI
 7CSG    )   
 7D#6    )                                  [IF DOESN'T FOLLOW 'WHILE'   
 7DRQ    #OPT           NESTREASON=0 
 7F?B    #OPT           NESTFLAG=0   
 7FR2    #OPT           NESTDEPTH=0  
 7G=L    #OPT           NESTEITHERS=0
 7GQ=          STRUCTURE 0,ON
 7H9W          ALTDEPTH +1   
 7HPG    #ALT           NESTFLAG=NESTFLAG^1 [SET 'DO'
 7J96    #SKI           NESTDEPTH/9  
 7JNQ    (   
 7K8B    #ALT           20?=NESTDEPTH-9  
 7KN2          NESTLABEL NIF5
 7L7L    #EXI
 7LM=    )   
 7M6W    #ALT           20?=NESTDEPTH-1  
 7MLG          NESTLABEL NIF0
 7N66    #NOR
</code>