$Id: README,v 1.7 2001-01-02 13:25:29 markus Exp $

Contents of this directory:

D          : display library
bitmap     : bitmap library for X Window Bitmaps
btree      : binary tree library
bwidget    : tcl/tk extra library
coorcnv    : coordinate conversion and datum support library
datetime   : DateTime library
dbmi       : database management interface database drivers
dig_atts   : library to read and write from attribute files
digitizer  : raw library for general digitizer support
display    : library for CELL driver
dlg        : library to manage DLG files
dspf       : G3D display files library
g3d        : G3D raster volume library
geom       : geometrical calculations, long-integer arithmetics, delaunay 
             triangulation, planesweep algorithm, simulation of simplicity 
             and others
gis        : main GRASS library
gmath      : generic mathematical functions (matrix, fft etc.) added by 
             D D Gray (later to be extended, BLAS/LAPACK library)
ibtree     : integer clone of binary tree library (btree)
icon       : icon library (required for PS/Paint icons, read, write, 
             manipulate icons)
image3     : extra imagery library
imagery    : imagery library
libimage   : image library required for SG3d/Iris, saving images in SGIs 
             rgb-format
linkm      : linked list memory manager
lock       : locking mechanism for GRASS monitors and files
ogsf       : ported gsurf library (required for NVIZ)
proj       : PROJ4.4.x projection library
raster     : GRASS raster library
rowio      : row in/out library
rst_gmsl   : library for interpolation with regularized splines with tension 
segment    : segment library
unused     : maybe treasures here?
vask       : Curses management library
vect32     : GRASS vector library
vect32_64  : new approach for a 32/64bit GRASS vector library (to be
             integrated in vect32)

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Some proposals for library re-design:

all data/metadata that are currently hardcoded into the libraries should be
read from files from the etc directory of the GISBASE, or if they are
project/location dependend, they should be read from a file in
$GISDBASE/$LOCATION_NAME/PERMANENT/filename.

Functions should be added to read these values.

The files are:
~~~~~~~~~~~~~~
element_list, this should be unified with tcltkgrass array
              featuredir/Featuredir

units (distance, area), there should be a central registry for all units
              that go into PROJ_UNITS etc.

colors, there should be a central registry file for all available colors,
              maybe in the format "color-name r g b" or such.

methods, where is this used except in tcltkgrass?