... License¹

This means basically, it is for free but it can still be used in commercial products. You should have received a copy of the LPGL along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

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... so²

If you have no root access on your machine, copy it somewhere in your directory tree and specify -I/home/genius/my_include/ when using g++ - supposed that you copied GetPot into /home/genius/my_include/.

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... argument³

Originally, C++ does not allow a function overloading with respect to the return type. The default argument must have the same type as the variable it will be assigned to. Therefore, functions are overloaded with respect to the default argument, which at the same time defines the return type.

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... option⁴

A famous program using these type of options is 'tar'. With strings like 'xzvf' this program allows to state very concisely a desired behavior (extract 'x', unzip 'z', verbose 'v' the following file 'f')

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... investigating⁵

That means to "" for example, in case you want to refer to the root section

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... file⁶

The idea behind is that the responsibility for the functioning of an application shall lie on the programmer. He has to make sure that the program, either produces error/warning messages or functions properly. An infinite recursion in the configuration file could not be caught be the application. An undocumented malfunctioning however is not acceptable, since the user has no means to adapt his inputs. The author is well aware that there are major software companies that do not share this philosophy.

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