#!/bin/sh:
# License:  This  program  is  free  software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as published by
# the  Free Software Foundation; either version 3 of the License, or (at your
# option)  any later version. This program is distributed in the hope that it
# will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
# of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.

CMD/BAT:

:: License:  This  program  is  free software; you can redistribute it and/or
:: modify  it  under the terms of the GNU General Public License as published
:: by  the  Free Software Foundation; either version 3 of the License, or (at
:: your  option)  any  later version. This program is distributed in the hope
:: that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
:: warranty  of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
:: GNU General Public License for more details.

HTML:

<!--  License:  This program is free software; you can redistribute it and/or
modify  it  under the terms of the GNU General Public License as published by
the  Free  Software  Foundation; either version 3 of the License, or (at your
option)  any  later  version. This program is distributed in the hope that it
will  be  useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of  MERCHANTABILITY  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
Public License for more details. -->

JavaScript:

// License:  This  program  is  free software; you can redistribute it and/or
// modify  it  under the terms of the GNU General Public License as published
// by  the  Free Software Foundation; either version 3 of the License, or (at
// your  option)  any  later version. This program is distributed in the hope
// that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
// warranty  of  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

BASIC:

' License:  This  program  is  free  software; you can redistribute it and/or
' modify it under the terms of the GNU General Public License as published by
' the  Free Software Foundation; either version 3 of the License, or (at your
' option)  any later version. This program is distributed in the hope that it
' will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
' of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
' Public License for more details.

C:

/*
* License:  This  program  is  free  software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published by
* the  Free Software Foundation; either version 3 of the License, or (at your
* option)  any later version. This program is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*/

http://www.topcat.hypermart.net/index.html

GNU/GPL license blocks commented for various languages...

Boiler plate GPL license blocks commented for various languages

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