+ "\t-g search for alg given hex+crc\t-h | -u | -? show this help\n"
+ "Common Use Examples:\n"
+ "\t reveng -g 01020304e3\n"
+ "\t Searches for a known/common crc preset that computes the crc\n"
+ "\t on the end of the given hex string\n"
+ "\t reveng -w 8 -s 01020304e3 010204039d\n"
+ "\t Searches for any possible 8 bit width crc calc that computes\n"
+ "\t the crc on the end of the given hex string(s)\n"
+ "\t reveng -m CRC-8 -c 01020304\n"
+ "\t Calculates the crc-8 of the given hex string\n"
+ "\t reveng -D\n"
+ "\t Outputs a list of all known/common crc models with their\n"
+ "\t preset values\n"