First simply commands

• Clrscr;

  Command clears a screeen and set actual color.

• GotoXY(X,Y:byte);

  Get a cursor to a position definited by X,Y.
  
  Resolution has a resolution of 25 linrs and 80 columns.
  

• Write (S:[variable var]);
  Write ('text between apostrophes');

  It will write on actual position of cursor a ammount of variable or tetxt between an apostrophes.

• WriteLn (S:[variable var]);
  WriteLn ('text between apostrophes');

  Like write, but it wile write it to the new line.

• Read (S:[variable var]);

  Read a entry from a keyboard, and save it to the S variable.

• ReadLn (S:[variable var]);

  Like read, but it will read a character for the end of the line. (Enter). For saving a variables always use a ReadLn no Read.

{ Príklad: Program požiada o čísla X,Y a meno }
{ potom na súradnicu X,Y vypí‘e meno }

program citat_vypis;
  uses crt,dos;
  var x,y:integer;
      meno:string;
begin
    Clrscr;
    GotoXY(2,2);WriteLn('Zadaj suradnicu X=');
    ReadLn(X);
    GotoXY(2,3);WriteLn('Zadaj suradnicu Y=');
    ReadLn(Y);
    GotoXY(3,3);WriteLn('Zadaj meno');
    ReadLn(meno);
    GotoXY(X,Y);WriteLn( meno);
end.



• TextColor(Col:byte);

  Nastaví farbu u znakov ktoré sa vypisujú na obrazovku.

  Čís	Color	Color	Čís	Color	Color
  0	Black	Black	8	Darkgray	Darkgray
  1	Blue	Blue	9	Lightblue	Lightblue
  2	Green	Green	10	Lightgreen	Lightgreen
  3	Cyan	Cyan	11	Lightcyan	Lightcyan
  4	Red	Red	12	Lightred	Lightred
  5	Magenta	Magenta	13	Lightmagenta	Lightmagenta
  6	Brown	Brown	14	Yellow	Yellow
  7	Lightgray	Lightgray	15	White	White

  
  
• TextBackGround(Col:byte);

  Nastaví farbu podkladu znakov vypisovaných na obrazovke. U TextBackGround je možné použi len farby 0-7.