Plan 9 from Bell Labs’s /usr/web/sources/contrib/de0u/root/sys/src/cmd/squeak/Cross/plugins/WeDoPlugin/WeDoPlugin.h
#ifndef _SQ_WEDO_PLUGIN_H_ #define _SQ_WEDO_PLUGIN_H_ int WeDoOpenPort(void); int WeDoClosePort(void); int WeDoRead(char *bufPtr, int bufSize); int WeDoWrite(char *bufPtr, int bufSize); #endif /* _SQ_WEDO_PLUGIN_H_ */