MacMod Pro includes two editors.  The original standard editor and a new staff editor.  Both editors do the same thing.  The only difference is the interface with which you edit or compose songs.  The internal title of the song is displayed at the top of the window and can be edited.
•A memory graph is located at the bottom of the editor window

Standard Editor

The pattern name of the currently viewed pattern is displayed under the view mode popup menu.  This is editable identical to the internal title text.  Beside the pattern name are two buttons:  the ‘Place Bookmark’ and ‘Bookmark Listing’ buttons.  Below this row is where the editor begins.  For each voice there is a white area where you can type in notes.  Beside each white area there are two buttons.  The first allows you to select an instrument to use for any note on that line.  The second button allows you to apply an effect.  The instrument selected, if any, is be displayed on the instrument selection button.  An abbreviation of the selected effect is displayed on the effect button.  •To erase an effect, click the effect button and choose ‘arpeggiation’ and set both parameters to ‘0’.  The lines of the patterns are displayed on the left of the editor window.  The current pattern number is displayed at the bottom left of the window.  
•Holding down the 'Option' key while clicking on the instrument selection button will play the instrument displayed on the button.
•Clicking in the bottom left corner of the editor will display a list of the patterns for a quick method for jumping to any pattern.

To insert notes, click in the white area where you wish to insert the note.  A blinking cursor should appear.  The white areas consist of three columns.  The first column is where you enter the note letter (ie:  ‘A’-‘G’).  The second column is where you specify a sharp (‘#’), a flat (‘-’), or a natural (‘ ’ [space]).  The third column is where you enter the desired octave (0-6).  The lower the number, the lower the octave.

See the Keys section of the help system to see which keyboard keys are supported.  If you enter a ‘B#’ or a ‘C-’, MacMod Pro will automatically convert it to a ‘C ’ or ‘B ’ to simplify the display.

The spacing for each type of note under normal speed settings are:
    1 space   = sixteenth note
    2 spaces = eighth note
    4 spaces = quarter note
    8 spaces = half note
  16 spaces = whole note

Voices or lines can be hilited by double-clicking on their labels.  For example, to hilite all of voice 1 you would double-click where ‘Voice 1’ is written in the Editor window.  The current pattern (ie:  the pattern currently in view in the Editor window) can be hilited by clicking on the button with a ‘p’ in the upper left of the Editor window.  The entire mod can be hilited by clicking on the button with an ‘m’.  Other portions of the music can be hilited by holding the mouse button down and dragging across the window.

To use the ‘Find’ item of the Options menu, you must choose what to search for (note, instrument, or effect).  Then you must choose which note, instrument, or effect to search for.  The format for entering a note is the note letter (A-G) followed by a #, -, or space followed by an octave number (0-6).

Staff Editor

The staff editor is much like the standard editor.  The difference lies in how you insert notes.  To insert a note, select one of the different notes from the palette on the left of the Editor window.  You may select a sharp, flat, or natural.  If you do not, MacMod Pro will assume a natural.  You can extend the note by half of it's original length by clicking the ‘dot’ button.  You cannot use this button with a sixteenth note or rest because the staff is limited to sixteenth note accuracy.  To select an instrument for a note, click the pencil button in the palette and hold down the option key while clicking on the note's head.  You must hold down the mouse button for the instrument popup menu to appear.  To set an effect for a note, click in the pencil button and then click on the note's head.  Selecting parts of the music can be done by clicking in the pencil button and then clicking in the staff and dragging the mouse.  To select an entire voice, double click  on the voice's label to the left of the staff.  To tie two or more notes together, select the notes, and then either click in the bottom button of the palette or choose ‘Tie Notes’ from the Staff menu.

You can change the current song's key signature by choosing ‘Key Signature’ from the Staff menu.  This only affects the way the music is displayed in the staff editor.

You can also change the base octave in the staff by choosing ‘Set Octave Range’ from the Staff menu.  This changes which octaves are displayed in the staff editor.