@comment %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@comment  Version control history
@comment %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@comment  $Id$
@comment  $Log$
@comment  Revision 1.25  2004/08/27 20:12:34  geraint
@comment  Added note about "none" as an option for units.
@comment
@comment  Revision 1.24  2004/08/13 01:39:24  geraint
@comment  Fixed variable names in diy makefile example (again)
@comment
@comment  Revision 1.23  2004/08/11 08:24:28  geraint
@comment  Replaced "gnuplot view" with "odeso gnuplot" in examples.
@comment
@comment  Revision 1.21  2004/07/23 11:05:26  geraint

@item -d 
        <dir>  use directory <dir>
@item -dc 
       Maximise derivative (not integral) causality
@item -dc 
       Maximise derivative (not integral) causality
@item -i 
       <implicit|euler|rk4>   Use implicit, euler or Runge Kutta IV integration
@item -o 
       ode is same as dae
@item -oct 
       use oct files in place of m files where appropriate
@item -opt 
       optimise code generation
@item -p 

@end example
@enumerate
@item 
    At this stage, @strong{MTT} will warn you that the labeled components do
    not appear in the label file - this can safely be ignored.
@item
  @strong{MTT} will indicate the percentage of components which are
    causally complete -- ideally this will be 100%. Components which are
    not causally complete will be listed.
@item
    A view of the causal bond graph will be created. The added causal
    strokes are indicated in blue, undercausal components in green and
    overcausal components in red.
@item
    If the bond graph is causally complete, proceed to the next step,

taken to be the half-arrow. its positioning is significant because:
@itemize @bullet
@item
It points in the direction of power flow; thus a bond normally points
towards C, I and R components.
@item
the corresponding side of the bond indicates flow causality; the other
side represents effort causality. This is significant when using causal
half-strokes (@pxref{strokes}). Please adopt the convention of having
the half-arrows below horizontal bonds and to the right of vertical bonds.
@end itemize



@c      node   next  prev  up

@node Port label defaults, Vector components, Vector port labels, Language fig (abg.fig)
@comment  node-name,  next,  previous,  up
@subsubsection Port label defaults
@cindex Port label defaults
@pindex Port label defaults
Whether impicitly or explicity, all ports of components (with the
exception of 0 and 1 junctions) must have labels  (@pxref{Port
labels}). However, these can be omitted from the bond graph in the
following circumstances and default labels are supplied by @strong{MTT}.
@enumerate
@item A single unlabled inport defaults to [in]
@item A single unlabled outport defaults to [out]
@end enumerate

@item Alias - lines beginning with #ALIAS
@item Comments - lines beginning with # 
@item Labels - other non-blank lines
@end itemize

Note, for compatability with old versions, % may be used in place of
#; but the use of % is deprecated.
Each label contains three fields (in the following order) separated by
white space and on one line:
@enumerate
@item The component name @pxref{Component names}. This must be a valid
name  (@pxref{Valid names}.
@item The component constitutive relationship @pxref{Component constitutive relationship}
@item The component arguments @pxref{Component arguments}
@end enumerate

# Generated by MTT at Mon Jun 16 15:10:17 BST 1997

# %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
# %% Version control history
# %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
# %% $Id$
# %% $Log$
# %% Revision 1.25  2004/08/27 20:12:34  geraint
# %% Added note about "none" as an option for units.
# %%
# %% Revision 1.24  2004/08/13 01:39:24  geraint
# %% Fixed variable names in diy makefile example (again)
# %%
# %% Revision 1.23  2004/08/11 08:24:28  geraint
# %% Replaced "gnuplot view" with "odeso gnuplot" in examples.
# %%
# %% Revision 1.21  2004/07/23 11:05:26  geraint