The package below has been updated at tug.ctan.org and should soon be at your favorite mirror.
Jim Hefferon Saint Michael's College
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The following information was provided by our fellow contributor:
Name of contribution: blockdraw_mp Author's name: Henrik Tidefelt Location on CTAN: /graphics/metapost/contrib/macros/ Summary description: MetaPost macros for the creation of block diagrams and bond graphs License type: lppl
Announcement text: ---------------------------------------------------------------------- The previous version defined bond graph junction symbols using btex...etex in a package file, making it impossible to affect the LaTeX preamble used for these labels without changing the package file. The fix is not backward compatible, but adds requested flexibility.
The asymmetric arrowhead on a bond can now be drawn as a simple stroke. ----------------------------------------------------------------------
This package is located at http://tug.ctan.org/tex-archive/graphics/metapost/contrib/macros/blockdraw_m... . More information is at http://tug.ctan.org/cgi-bin/ctanPackageInformation.py?id=blockdraw_mp (if the package is new it may take a day for that information to appear). We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .