This directory contains halfiles (*.hal and *.tcl) that are available
using the LinuxCNC halfile search path or by an explicit directive.

The HALLIB_PATH is '.:HALLIB_DIR'
   The '.' specifies the directory containing the INI file.
   HALIB_DIR specifies this directory.

The explicit directive uses a prefix (LIB:) to identify halfiles:
  [HAL]
  HALFILE = LIB:filename.[hal|tcl]

The LinuxCNC startup script (linuxcnc) finds each halfile using the
HALLIB_PATH unless the explicit directive is used.

Also included in this directory are files associated with included
system halfiles.  For example, the button layout files
(xhc-hb04-layout*.cfg) that are used with the halfile xhc-hb04.tcl.
------------------------------------------------------------------------


Hal files (*.hal)          Notes
-----------------------    ---------------------------------------------
axis_manualtoolchange.hal  setup for using hal_manualtoolchange
                             (for axis or other guis)
core_sim.hal               xyz simulator config
core_servo.hal             xyz servo (pid) config
core_sim9.hal              9 axis (xyzabcuvw) simulation config
core_stepper.hal           xyz stepper config
gantrysim.hal              gantrykins config, 4 joints: X Y Y Z
lathe.hal                  simulate spindle with encoder,sim_encoder
locking_indexer.hal        simulate locking rotary using timedelay comp
wheeljogpins.tcl           enable wheel jog pins for joints & axes
moveoff_external.hal       Simulate external control connections for
                             a moveoff component
servo_sim.hal              simulate servo (pid) xyz using lowpass comp
sim_spindle_encoder.hal    simulate spindle with lowpass filter
simulated-gantry-home.hal  simulate gantry home switches (4 joints)
simulated_home.hal         simulate xyz home switches
simulated_limits.hal       simulate xyz limit switches
tripodsim.hal              simulated tripodkins system

Haltcl Files (*.tcl)       Notes
-----------------------    ---------------------------------------------
basic_sim.tcl              set up a sim config (arbitrary no. of axes)
var_show.tcl               show INI variables and context
hookup_moveoff.tcl         make connections for a moveoff component
plasmac.tcl                common connections for the plasmac component

xhc-hb04.tcl               Configuration builder for xhc-hb04 pendant
xhc-hb04-layout1.cfg         button layout 1 for xhc-hb04.tcl
xhc-hb04-layout2.cfg         button layout 2 for xhc-hb04.tcl

halcheck.tcl               Report: 1) functions without addf
                                   2) signals with no inputs
                                   3) signals with no output

Haltcl libs (*_lib.tcl)    Notes
-----------------------    ---------------------------------------------
sim_lib.tcl                simulator config procedures
                             procs:
                               core_sim       (arbitrary axes)
                               make-ddts      (arbitrary axes)
                               simulated_home (arbitrary axes)
                               use_hal_manualtoolchange
                               sim_spindle
util_lib.tcl               utility procedures
                             procs:
                               show_context (calling parms)
                               show_ini     (INI file settings)
                               show_env     (environmental vars)
