0.7.6
=====

added structure dataset properties vdwr and color to specify default radii and
default colors. use with selection statement:
Syntax:  .struct set vdwr=RAD -sel SEL
         .struct set color=COL -sel SEL

added structure object property vdwr to change individual radii of atoms
in objects:
Syntax:  .struct.obj set vdwr=RAD -sel SEL

added (partial) POV support for geom dataset

added scene command spin: toggles continuous rotation in last direction
(ok, ok, it is neat and now I put it in . . .)
Syntax:  scene spin

added scalar field dataset property scale (mainly for EM densities):
Syntax:  .scal set scale=VALUE

added render property strandm for strand method:
Syntax: .struct.obj render hsc,strandm=0 // default
        .struct.obj render hsc,strandm=1 // smoothing

added object command material to specify ambient, specular, shininess
and emmision properties:
Syntax: .ds.obj material [amb=VAL][,spec=VAL][,shin=VAL][,emm=VAL]

added DELPHI binary input, extension ".grd" or "-type delphi"
NOTE: not the flexible format written out for INSIGHT, rather the static
'grasp' version with fixed 65x65x65 gridunits!

changed CPK sphere drawing algorithm (is it faster ?)

added scene:clipN to support arbitrary clipping planes (N: 0 only):
Syntax: scene:clip0 [on | off][,pos={x,y,z}][,dir={xn,yn,zn}]
        scene:clip0 grab DEVICE

"scene:lightN set pos" bug fixed

fixed bug that ignored color setting during ".scal new"

fixed broken "render intpol"

fixed bug in "set rot="

tweaked default material settings (amb=0.25 diff=0.55 spec=0.2 shin=16)


0.7.5
=====

new property for render: detail2 sets circular subdivision (for tube, cylinder
and hsc objects, default is 3 (eq 30 deg steps))

povray output, see file POVRAY for more detail

memory management for isocontouring improved

pressing ESC in pause mode interrupts script processing

added db commands rotx, roty, royz and transx, transy and transz, e.g.
.struct rotx 90. Use 'fix' and 'reset' as with grabbed transformations

changed variables definitions to:

  protein = (rname=ALA,CYS,ASP,GLU,PHE,GLY,HIS,ILE,LYS,LEU,
                   MET,ASN,PRO,GLN,ARG,SER,THR,VAL,TRP,TYR)
  dna = (rname=A,C,G,T)
  rna = (rname=A,C,G,U)
  aliphatic = (rname=ALA,GLY,ILE,LEU,MET,PRO,VAL)
  aromatic = (rname=PHE,TYR,TRP)
  hydrophobic = (rname=ALA,VAL,PHE,PRO,MET,ILE,LEU,TRP)
  basic = (rname=ARG,LYS)
  basic2 = ((rname=LYS and aname=NZ) or (rname=ARG and aname=NH1,NH2))
  acidic = (rname=ASP,GLU)
  acidic2 = ((rname=GLU and aname=OE1,OE2) or (rname=ASP and aname=OD1,OD2))
  polar = (rname=SER,THR,TYR,HIS,CYS,ASN,GLN)
  polar2 = ((rname=SER and aname=OG) or (rname=THR and aname=OG1) or 
            (rname=TYR and aname=OH) or (rname=HIS and aname=ND1,NE2) or
	  	    (rname=CYS and aname=SG) or (rname=ASN and aname=OD1,ND1) or 
		    (rname=GLN and aname=OE1,NE1) or (rname=TRP and aname=NE1)) 


fixed bug in ccp4 -swap mode

fixed bug for scalar field that would interpret level always as sigma

fixed bug in "render light2"

fixed bug in struct db/obj write that caused atom name to be written incorrectly

other minor improvements


v0.7.2-v0.7.4
=============

internal versions


v0.7.1
======

- removed XSGIvc calls (SGI version)

- fixed distance measurement bug



The changes from version 0.6.x are numerous
Here are only the major ones:
===========================================

- two new dataset types: topography and geometric primitives

- new formats MSP, MEAD, CNS

- rigid body transformation of datasets

- secondary structure rendering reworked, only one trace object
  and one render mode is needed (looks nicer, too)

- new selection criteria '.object'

- complete rewrite of selection evaluation, should be faster and more
  stable

- surface attachment completely reworked. Multiple attachments to more
  than one structure dataset possible

- full control over GL lightsources

- completely rewritten manual

- lots of bug fixes, speed improvements, etc



