Chapters: 1: Introduction 2: Simple example 3: Invocation 4: Finer Control 5: X-Y Plots 6: Contour Plots 7: Image Plots 8: Examples 9: Gri Commands 10: Programming 11: Environment 12: Emacs Mode 13: History 14: Installation 15: Gri Bugs 16: Test Suite 17: Gri in Press 18: Acknowledgments 19: License Indices: Concepts Commands Variables | ## 10.1: Defaults At startup time, Gri sets the values of some things, like font size. Since Gri is still under development, some of these defaults might change, so you should not rely on them remaining the same. Presently, the defaults are equivalent to:
    set arrow size 0.2         # (cm)
    set axes style 0
    set beep off
    set clip off
    set clip postscript off
    set contour format %lg
    set contour label position ? ?
    set contour labels horizontal
    set contour labels whiteunder
    set dash off
    set font size 12           # (pt)
    set font to helvetica
    set graylevel 0            # Black ink
    set ignore initial newline off
    set input data window x off
    set input data window y off
    # Following set (curve, axes, symbol) widths to width
    # of rapidograph pens called (6x0, 3x0,  6x0)
    set line width 0.709        # (pt) for curves
    set line width axis 0.369   # (pt) for axes
    set line width symbol 0.369 # (pt) for symbols
    set missing value 1.0e22
    set page portrait
    set page factor 1
    set symbol size 0.1        # (cm)
    set tic size 0.2           # (cm)
    set tics out
    set trace off
    set x format %lg
    set x margin 6.0           # (cm)
    set x name "x"
    set x size 10              # (cm)
    set x type linear
    set y axis name vertical
    set y format %lg
    set y margin 6.0           # (cm)
    set y name "y"
    set y size 10              # (cm)
    set y type linear
(NOTE: Programmers may alter the gri source file ``defaults.h`' and then recompile Gri, if they feel the need to change these things. Also, see the file ``startup.c`' and the function ``gr_begin()`' in ``gr.c`'.)