Usage: mrcImageMergebyside Options: [-i1[input1] In1 (NULL )] :Essential :InputDataFile [-i2[input2] In2 (NULL )] :Essential :InputDataFile [-o[utput] Out (NULL )] :Essential :OutputDataFile [-c[onfig] configFile (NULL )] :Optional :ConfigurationFile [-v[alue] sep (0 )] :Optional :Value for separation:For mode 1 only [-m[ode] mode (0 )] :Optional :Mode