The following sample MX Drawing file has been dissected and embellished with explanations shown in red.

Major Option MOSS resets the error indicators, it never hurts to begin any MX input file with Major Option MOSS

   IMPERIAL 10-scale CROSS-SECTIONS
   01-2012, compiled by yourself 
   *** NH ROUTE ## ***

Note records either begin with 3 spaces or 3 zeros (000).  Always date and claim ownership.

NEWDPF,DRAW.DPW
SUBS
SYSDEL,12345XSMCFM.DPW
SYSDEL,12345XSMCFM.DGN
999

In case this file has been previously run, these lines delete the previously created drawings so this run has a clean foundation to work with.

NEWDPF,12345XSMCFM.DPW

Major Option NEWDPF creates and opens a new MX drawing (DPF or DPW), or opens an existing one.  The associated data represents the drawing name.

DRAW,FDESIGN MCFM SECTIONS,FDESIGN MCFM

Major Option DRAW.  The first associated field identifies the model containing the strings to draw.  The second field identifies the reference model, this field may be left blank if the reference model is the same as the first model.

900,XS-MS

Draw Minor option 900, Use A Macro.  The associated data represents the macro name. 

FD='',LR=MCFM,CS=E,FS=D,PS='',
IN=.1,DS='',DSL=E,PROJ=12345,
TITLE='NH Route ###',XS=50020,XE=50230

Macro Variables.  Every variable except the last one must be followed by a comma.  Refer to the XS-MS Macro for variable details.

805,cyan
826,Z,,,,20200,,,20520
805,190
826,C,,,,20200,,,20520

Optional Draw Minor options to overdraw additional section sets.  Refer to the MX Command Language Reference (also known as the QRG) for details of all Major and Minor options.  Refer to the Cross Section Set Labels for descriptions of available section sets.

999

Global Minor Option 999, End A Major Option.  No associated data.

DISPLAY

Major Option DISPLAY instructs MX to update the display immediately.

FINISH

Major Option FINISH terminates input from the file.  No associated data.