color indicates subject colours

pspecs dot-matrix printer specifications

setcar dot-matrix printer control character specifications

STARTP¹ start each plot

1 One STARTP line must be entered for each plot: pspecs,setcar or color lines must precede STARTP lines.

PLOT input plot file extension ort

color colour options followed by colour indices

nofill n1... n16 atom type colours; do not fill atoms or bonds

fill n1...n16 atom type colours; fill atoms or bonds

bond m bond colour

char m character colour

numb m number colour

contur n1 ... n5 contour colours

nocol one-colour plot

the default colour indices are as follows:

nofill/fill 2 3 4 5 6 7 2 3 4 5 6 7

bond 1 char 2 numb 3 contur 2 3 4 5 6

STARTP 1 output device code

char character or line printer

dot dot-matrix printer

plot pen plotter

vdu colour graphics terminal

loc1 local plotter device 1

loc2 local plotter device 2

2 number of plots to be plotted 1

3 plot width 12.5; 10.; 12.0; 9.4; 18.; 12.

4 plot height 8.; 10.; 12.; 7.1; 27.; 12.

5 magnification factor automatic scaling

6 x coordinate of plot centre automatic centring

7 y coordinate of plot centre automatic centring

8 plot border signal plot border

nobord do not plot border

9 resolution of output .1; .0139; .0005; .0196; .001; .0005

pspecs 1 horizontal pixels per inch hdpi: (normally 100)

2 vertical pixels per inch vdpi: (normally 100)

3 number of pixel bits in a printer character ¹ mxbtch:

4 direction of storage of the pixels in the byte¹

rtl right to left

ltr left to right

5 starting bit in printer character 0

6 number of computer characters per printer character 1

7 printer motion

mon monodirectional

bid bidirectional

8 max number of characters in single output line mxchln:

1 Bits in a printer character are numbered 7, 6, ..., 1, 0. If field 3 is set to 6 and field 4 is set to rtl, then field 5 may be only 2, 1 or 0. If field 4 is ltr, then field 5 may be only 7, 6 or 5.

setcar 1 character string designation

plot plot character¹

cler printer byte clearing¹

prel preliminary characters starting a plot

finl final characters ending a plot

pltr prologue characters for each line ltr

prtl prologue characters for each line rtl

ebuf epilogue characters for the printer buffer

eeol epilogue for a complete pltr or prtl line

2- decimal integer representations (in ASCII or EBCDIC) of the control characters needed to perform the function specified in field 1

1 The number of fields for the plot and cler commands depends upon field 6 of the pspecs line.