Tips and tricks
================


Extended characters, especially Greek alphabet
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It is possible to use fonts other than the standard font in any text area (curve legend, axis label, etc...). In particular, it is possible to use the "Symbol" font to insert Greek characters.

For this, if in the "String" field of the legend we put the following string "test\ f {Symbol} test\ f {Arial} test", like this:


.. image:: images/100000000000018C0000003AAD114B1B9B25523F.png
    :width: 4.1244in
    :height: 0.6035in


.. _RefImage_100000000000018C0000003AAD114B1B9B25523F.png:

we get a legend that looks like this (the command\ f {x} changing the font)


.. image:: images/10000000000000F60000002912395DBF9F227123.png
    :width: 2.5618in
    :height: 0.4264in


.. _RefImage_10000000000000F60000002912395DBF9F227123.png:

The User's Guide in paragraph 7.1 shows the various commands for controlling the formatting of text areas (in particular fonts, size, color, etc.) and in paragraph [:ref:`§6.1 <§6.1>`] the mechanism for defining the various fonts that Grace can use.


Point or comma?
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By default, Grace relies on the user environment to determine whether to represent decimal numbers with a period or a comma. On most recent systems, in France, it will therefore use the comma. If it is necessary to print curves with points, under Linux, you must do the following manipulation: before starting Grace, do "export LC_NUMERIC = POSIX" or "setenv LC_NUMERIC POSIX" depending on the shell used.


Batch
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It is possible to go from the graphical interface, especially for repetitive tasks, we will find examples of the use of batch in the tutorial:

http://plasma-gate.weizmann.ac.il/Grace/doc/Tutorial.html