what means of \x96g in the topic of Enabling Debugging in OpenCL™ Runtime

in the development documents,Enabling Debugging in OpenCL™ Runtime (https://software.intel.com/en-us/node/539339), there is a step like: Add the \x96g flag to the build options string parameter in the clBuildProgram function. what means of the "\x96g", it's a unicode, or something else? if it's a unicode, it means "Grave Accent", which doesn't make sense.

and more, in the following, \x93-g -s \\x93<path_to_opencl_source_file>\\x94\x94, might you please give an exact example for this?

thanks,

-Edward