The MS program can create scores  with as many staves as desired,  however
only up to 8 staves may appear on the CRT display at one time. Due to  the
limitations of the display system it is best to deal with as few staves at
a time as is convenient.  The dispayable staves are numbered zero  through
7 with 0 appearing at the bottom of the screen.

Each object  used  in  a  musical score  will  be  numbered  automatically
according to its order of entry.   These objects are known as "Items"  and
each Item will be  associated with a particular  staff number.  Each  Item
will be  defined  in  terms  of  a string  of  parameters.   The  first  4
parameters for each Item will conform to the following conventions.


	P1	will contain the special code number for each Item.
		For example the code number for notes is 1; 
		for rests, 2; for clefs, 3; etc.

	P2	will indicate the staff (0 to 7) to which the Item is
		attached.  The vertical size of a staff will determine
		the basic size of each Item associated with that staff.

	P3	will indicate the horizontal position of each Item. The
		normal full screen width has a range of numbers from
		0 to 200.  Position 100 is at the center of the screen.
		P3 numbers are absolute.  They are unaffected by staff
		size.  Floating point numbers may be used in this and
		most following parameters.  (The position numbers will 
		usually refer to the position of the left leading edge 
		of an object.)

	P4	sets the vertical position of each Item.  Vertical position
		will always be relative to the vertical position of the
		staff involved.  The position numbers are related to the
		numbering of the notes of the diatonic scale beginning
		with middle C=1.  The treble clef is assumed for this
		purpose.  Thus a note with P4 set to 1 would appear on
		the first ledger line below the staff.  The bottom line
		of the staff is position 3.  (The musical interval from
		C to E is a third.)  The first space in the staff is
		position 4, the top space is position 10, etc.  The analogy
		to musical intervals holds only when ascending from
		position 1.  Descending, the next position is 0 (for B
		below middle C), then -1 for A, -2 for G, etc.  Note that
		the actual clef used is not pertinent here; 1 will put a
		note on the first ledger line below the staff no matter
		what clef has appeared.  For many Items P4 will indicate
		the position of the bottom or middle (as with notes) of
		the Item, however there are many exceptions to this (clefs,
		rests, etc.)

	The  higher  parameter  numbers  will serve various functions
depending on the code number (P1) involved.



	A guide to spacing may be made to appear  on  the  screen  by
typing  SC  n <cr> , where n is a staff number.  (SC = spacing scale)
Upward from the bottom of the screen,  on  the  far  left  side,  the
numbers 0 to 7 will appear.  These refer to the numbered positions of
the staves.  Horizontally, at the level of whatever staff number that
has  been  given  following  SC,  the  scale is printed by tens in an
abbreviated form running from 0 to 9 (= 0 to 90), 0 to 9 again (= 100
to 190) and then a final 0 (= 200).  To move the scale to a different
staff level just type SC n <cr> with a new value for n.  To erase the
spacing  scale  entirely, type SC 99 <cr>.  It is usually a good idea
to have the spacing scale visible when any editing is being done.

	Setting up the musical staff.
	
	Usually  the  first step in entering a score is to set up the
staff.  The parameter list for a staff is as follows:

| P1 | P2   |  P3 |   P4   |  P5  |  P6 |  P7	  |   P8   |      P9	  |
|Code|Staff |Left |Relative| Size |Right|Visible, |Location|Identification|
|Num.| Num. |side |vertical|factor|side |invisible|   of   |     name	  |
|(8) |(Basic| of  |position|      | of  |	  |spacing |		  |
|    | vert.|staff|	   |      |staff|	  |  line  |		  |
|    | pos.)|     |	   |      |     |	  |	   |		  |
|    |(0to7)|     |	   |      |     |	  |	   |		  |

	Normally a zero in P2 will put a staff near the bottom of the
display.  However a staff zero may be  made  to  appear  anywhere  by
changing the number in P4. The vertical spacing units used in P4 will
be called "note level units." There are two note level units from one
staff line to the next. Thus if P4 = 2 the staff will appear 2 levels
higher than the basic position.  P4 = -10 would put the staff down 10
note levels.

	The  actual  size of each note level unit depends on the size
factor number in P5. When the program begins P5 is set to 1 for all 8
staves.  If  P5  equals 2, then the size of each note level unit will
double. P5 = .8 will make the note level units 80% of the basic size.
The  size factor of a staff will influence every Item associated with
that same staff.  Thus all the notes on a staff with P5 = .5  will be
half as  large  as  the notes on a staff with P5 = 1.  The horizontal
position numbers (0 to 200) are not affected by the P5 size factor of
the staff.

	P3 and P6 control the actual width of the staff. The original
values for these are 0 and 200. To make a staff occupy only the right
half of the screen set P3 to 100.  (If P6 is left at 0 it becomes the
default value of 200.) To make it occupy only the left half set P3 to
0 and P6 to 100. The horizontal spacing units will remain constant at
all times.  With most  Items  which  have  variable  left  and  right
position points, such as slurs, beams, various lines, etc., P3 and P6
are used to specify the left and right locations.

	Normally P7 is left at zero, however it is  sometimes  useful
to  have items associated with a staff size factor different from any
of those staves which are visible.  When P7 is set  to  1  the  staff
lines will be invisible but whatever values are given to P4 (vertical
note level position) and P5 (size factor will then serve as the bases
for all items using the same staff number (P2.)


	P8 is used to aid in spacing groups of  staves  when  several
separate  display  units  (files) are assembled to print a full page.
The use of this feature will be explained later.

	P9 can be made to hold a special identification name for each
staff.  These names are needed  when  the  automatic  part-extraction
program is used.  This program will be dealt with later.

	The following examples should be tried  to  gain  familiarity
with the  staff  placement.  All entries must be terminated with <cr>
(the return key.)

	To start  the  operation  of the program type R MS <cr>.  The
program will respond with "TYPE FOR ITEM 1". To put the spacing scale
on the  screen  type  SC0 <cr>.  The scale will appear and the prompt
will be repeated.

	Then type 8 <cr>.
	You now have a full-length staff at position zero, the bottom
of  the  screen,  with  a  size factor of 1.  Since only P1 (the code
number) has been given here all the default values for the  remaining
parameters are assumed by the program.  Now try,

	8 5 50 (always followed by <cr>.)

	In this case a staff will appear at staff position 5 with the
left  end  located  1/4  of the way (horizontal position 50) from the
left side of the screen.

	8 3 0 0 .8

	This will put a staff  at  position  3,  the  middle  of  the
screen,  vertically.  The size factor, in P5, will cause the staff to
be 80% of the vertical size of the other staves.  Now try,

	8 7 0 0 1.1 100

	This will put a staff near the top of the screen, position 7.
The size factor, 1.1, will  cause  it  to  be  10%  larger  than  the
standard  and the 100 in P6 will cause the right side of the staff to
end at the center of the screen.  The screen nw looks like this.

Editing

	Any of  the items appearing on the screen may be edited.  The
several methods for locating the parameters of particular items  will
be explained  later.  Each item is given a number internally as it is
entered.  To bring forth an item for editing simply type "I" followed
by the proper number. Thus typing I1 <cr> will make a cursor (marker)
appear at the left leading edge of the first staff entered.  Also the
list of  parameters  for that item will be printed on the screen.  At
this point any of  the  parameters  may  be  changed  by  typing  the
parameter number followed by the change desired.

	If  4  1 is typed the new vertical position of the staff will
appear superimposed on the original staff. Since P4 now has a 1 in it
the whole staff has been moved up 1 note level unit. The lines of the
new form of the staff will appear in the spaces of the original form.
The original parameter list will print out once more. Now if "X" (for
"exit from edit mode") is typed the original form of the  staff  will
disappear leaving  only  the altered version.  The list of parameters
will also disappear.  The screen will say  "TYPE FOR ITEM 5",  (there
are already  4 items on the screen.)  New items may now be entered or
further editing may be done.

	To re-edit  the  first  staff  type "I1" again.  (No space is
needed between I and 1.)  The parameter list for item 1 will now show
a 1 in P4.  If 4 -1 is typed the staff will appear 2 note level units
below its current position.  4 3 will superimpose it  2  note  levels
above its  current position.  In all these cases an absolute value is
being given for P4.  Relative values may be given by adding two zeros
to the parameter  number.  (Or, if you prefer, PnX100.)  Thus, typing
400 -3 will cause the edited version of the  staff  to  move  down  3
units from  whatever  level  it may be at.  If all the previous steps
have been typed as indicated the edited position will now be at level
zero.

	Several parameters may be changed at one time by typing pairs
of numbers. The parameter numbers need not be given in order.  3 10 6
190 400 4 will move the left and right sides of the staff (P3 and P6)
each  in  toward the center by 10 horizontal units and the staff will
be moved up by 4 note level units.  (P4 is listed as 400 to  cause  a
relative  shift.)  Typing  an  "X"  will once more exit from the edit
mode.









































	If nothing is typed at this point and instead of an "X"  (for
exit)  the  <cr>  key is struck the editing of item 1 will cease, the
old form of item 1 will disappear leaving only the  edited  form  and
the  cursor  will  move  on  to item 2 and its parameter list will be
printed.  Further carriage returns will step  through  the  items  in
order.  When  there are no more items found the cursor will no longer
appear (you will be out of edit mode) and the program will  wait  for
other commands.