Index: mttroot/mtt/doc/mtt.texi
==================================================================
--- mttroot/mtt/doc/mtt.texi
+++ mttroot/mtt/doc/mtt.texi
@@ -14,10 +14,13 @@
 @comment %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 @comment  Version control history
 @comment %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 @comment  $Id$
 @comment  $Log$
+@comment  Revision 1.5  2001/07/23 03:35:29  geraint
+@comment  Updated file structure (mtt/bin).
+@comment
 @comment  Revision 1.4  2001/07/23 03:25:02  geraint
 @comment  Added notes on -ae hybrd, rk4, ode2odes.cc, .oct dependencies.
 @comment
 @comment  Revision 1.3  2001/07/13 03:02:38  geraint
 @comment  Added notes on #ICD, gnuplot.txt and odes.sg rep.
@@ -634,10 +637,11 @@
 
 Extending MTT
 
 * Makefiles::                   
 * New representations::         
+* Component library ::          
 
 Languages
 
 * Fig::                         r
 * m::                           
@@ -3051,13 +3055,20 @@
 @code{SS} components and
 @code{SS} port components.
 
 
 In each case, the presence of a vector component is indicated by a
-single port label  (@pxref{Port labels}) containing numerals from 1 to
-the order of the vector. Thus a vector of 3 component is indicated by a
+single port label  (@pxref{Port labels}) of one of two forms:
+@enumerate
+@item containing numerals from 1 to
+the order of the vector. Thus a vector of 3 components is indicated by a
 port label of the form [1,2,3].
+@item  1: followed by
+the order of the vector. Thus a vector of 3 components is indicated by a
+port label of the form [1:3].
+@end enumerate
+
 
 Within the corresponding label file (@pxref{Labels (lbl)}), the
 components of a vector port can be accessed using _i where i is the
 corresponding index. Thus a port SS:[Electrical] appearing near the port
 label  [1,2,3] could contain the port alias (@pxref{Port aliases})
@@ -3105,10 +3116,55 @@
 @cindex valid name
 @pindex valid name
 A valid name is a text string containing alphanumeric characters.  It
 must @strong{NOT} contain underscore @samp{_}, hyphen @samp{-}, @samp{:}
 or @samp{*}.
+
+The following reserved words in reduce should also be avoided (with any case)
+@example
+
+Commands ALGEBRAIC ANTISYMMETRIC ARRAY BYE CLEAR CLEARRULES COMMENT
+CONT DECOMPOSE DEFINE DEPEND DISPLAY ED EDITDEF END EVEN FACTOR FOR
+FORALL FOREACH GO GOTO IF IN INDEX INFIX INPUT INTEGER KORDER LET
+LINEAR LISP LISTARGP LOAD LOAD PACKAGE MASS MATCH MATRIX MSHELL
+NODEPEND NONCOM NONZERO NOSPUR ODD OFF ON OPERATOR ORDER OUT PAUSE
+PRECEDENCE PRINT PRECISION PROCEDURE QUIT REAL REMFAC REMIND RETRY
+RETURN SAVEAS SCALAR SETMOD SHARE SHOWTIME SHUT SPUR SYMBOLIC
+SYMMETRIC VECDIM VECTOR WEIGHT WRITE WTLEVEL
+
+Boolean Operators EVENP FIXP FREEOF NUMBERP ORDP PRIMEP
+
+Infix Operators := = >= > <= < => + * / ^ ** . WHERE SETQ OR AND
+MEMBER MEMQ EQUAL NEQ EQ GEQ GREATERP LEQ LESSP PLUS DIFFERENCE MINUS
+TIMES QUOTIENT EXPT CONS Numerical Operators ABS ACOS ACOSH ACOT ACOTH
+ACSC ACSCH ASEC ASECH ASIN ASINH ATAN ATANH ATAN2 COS COSH COT COTH
+CSC CSCH EXP FACTORIAL FIX FLOOR HYPOT LN LOG LOGB LOG10 NEXTPRIME
+ROUND SEC SECH SIN SINH SQRT TAN TANH
+
+Prefix Operators APPEND ARGLENGTH CEILING COEFF COEFFN COFACTOR CONJ
+DEG DEN DET DF DILOG EI EPS ERF FACTORIZE FIRST GCD G IMPART INT
+INTERPOL LCM LCOF LENGTH LHS LINELENGTH LTERM MAINVAR MAT MATEIGEN MAX
+MIN MKID NULLSPACE NUM PART PF PRECISION RANDOM RANDOM NEW SEED RANK
+REDERR REDUCT REMAINDER REPART REST RESULTANT REVERSE RHS SECOND SET
+SHOWRULES SIGN SOLVE STRUCTR SUB SUM THIRD TP TRACE VARNAME
+
+Reserved Variables CARD NO E EVAL MODE FORT WIDTH HIGH POW I INFINITY
+K!* LOW POW NIL PI ROOT MULTIPLICITY T
+
+Switches ADJPREC ALGINT ALLBRANCH ALLFAC BFSPACE COMBINEEXPT
+COMBINELOGS COMP COMPLEX CRAMER CREF DEFN DEMO DIV ECHO ERRCONT
+EVALLHSEQP EXP EXPANDLOGS EZGCD FACTOR FORT FULLROOTS GCD IFACTOR INT
+INTSTR LCM LIST LISTARGS MCD MODULAR MSG MULTIPLICITIES NAT NERO
+NOSPLIT OUTPUT PERIOD PRECISE PRET PRI RAT RATARG RATIONAL RATIONALIZE
+RATPRI REVPRI RLISP88 ROUNDALL ROUNDBF ROUNDED SAVESTRUCTR
+SOLVESINGULAR TIME TRA TRFAC TRIGFORM TRINT
+
+Other Reserved Ids BEGIN DO EXPR FEXPR INPUT LAMBDA LISP MACRO PRODUCT
+REPEAT SMACRO SUM UNTIL WHEN WHILE WS
+
+
+@end example
 
 
 
 @node Language m (rbg.m), Language m (abg.m), Language fig (abg.fig), Acausal bond graph (abg)
 @comment  node-name,  next,  previous,  up
@@ -4466,10 +4522,13 @@
 # %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 # %% Version control history
 # %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 # %% $Id$
 # %% $Log$
+# %% Revision 1.5  2001/07/23 03:35:29  geraint
+# %% Updated file structure (mtt/bin).
+# %%
 # %% Revision 1.4  2001/07/23 03:25:02  geraint
 # %% Added notes on -ae hybrd, rk4, ode2odes.cc, .oct dependencies.
 # %%
 # %% Revision 1.3  2001/07/13 03:02:38  geraint
 # %% Added notes on #ICD, gnuplot.txt and odes.sg rep.
@@ -5358,15 +5417,16 @@
 @cindex Extending MTT
 @cindex Make
 
 @strong{MTT} has a number of built-in mechanisms for the user to extend
 its capabilities. As @strong{MTT} is based on `Make' it is unsurprising
-that these  involve the creation of `make files'. 
+that some of these  involve the creation of `make files'. 
 
 @menu
 * Makefiles::                   
 * New representations::         
+* Component library ::          
 @end menu
 
 @node Makefiles, New representations, Extending MTT, Extending MTT
 @comment  node-name,  next,  previous,  up
 @section Makefiles
@@ -5398,11 +5458,11 @@
         mtt -q TwoLinkGMV numpar m
 @end example
 All of the files in the line stating `all:' are created when
 @strong{MTT} is executed (if they don't already exist).
 
-@node New representations,  , Makefiles, Extending MTT
+@node New representations, Component library , Makefiles, Extending MTT
 @comment  node-name,  next,  previous,  up
 @section New representations
 @cindex New representations
 
 It may be convenient to create new representations for @strong{MTT}; in
@@ -5485,10 +5545,28 @@
 
 @end example
 
 Future extensions of @strong{MTT} will use such representations stored
 in $MTT_REP.
+
+@node Component library ,  , New representations, Extending MTT
+@comment  node-name,  next,  previous,  up
+@section Component library
+@cindex Component library
+@cindex component
+@cindex Component library
+
+If @strong{MTT} does not recognise a component (eg named MyComponent) as
+a simple component (@pxref{Simple components}) or as already existing,
+it searches the library search path $MTT_COMPONENTS
+(@pxref{$MTT_COMPONENTS}) for a directory called MyComponent containing
+MyComponent_abg.fig. It then copies the @emph{entire} directory into the
+current working directory. Thus, for example, the directory could
+contain MyComponent_desc.tex MyComponent_lbl.txt and MyComponent_cr.r in
+addition to MyComponent_abg.fig.
+
+
 
 @c      node   next  prev  up
 @node   Languages, Language tools, Extending MTT, Top
 @chapter Languages
 @cindex Languages
@@ -5933,11 +6011,11 @@
 @vindex $MTT_COMPONENTS
 The environment variable $MTT_COMPONENTS is a colon-separated path
 pointing to directories containing components and subsystems.
 By default
 @example
-MTT_COMPONENTS=$MTTPATH/lib/comp
+MTT_COMPONENTS=.:$MTT_LIB/lib/comp/
 @end example
 but you may wish to add your own component libraries:
 @example
 MTT_COMPONENTS=my_library_path:$MTT_COMPONENTS
 @end example