добавить в плагин слово..

#include <	amxmodx	>

new const P[]	=	"[PUB] Hide Slash"
new const V[]	=	"1.0"
new const A[]	=	"Bonaqua"

new g_Msg[64];

public plugin_init()
{
	register_plugin( P, V, A )
	
	register_clcmd( "say", "Cmd_Hook_Say" )
	register_clcmd( "say_team", "Cmd_Hook_Say" )
}

public Cmd_Hook_Say()
{
	read_args(g_Msg,63);
	remove_quotes(g_Msg);

	if(g_Msg[0] == '/'),
	{
		return PLUGIN_HANDLED
	}
	return PLUGIN_CONTINUE
}