Reflectance values express the percentage of light that is reflected back from a surface, the difference having been absorbed or transmitted by the surface. Reflectances of room surfaces are used in determining coefficient of utilization values for luminaires.
The last three lines show you how to define your own awk function. The format is simple -- type function, then the function name, and then the parameters separated by commas, inside parentheses. After this, a { } code block contains the code that you'd like this function to execute.
CHKDSK is a command in the Windows command line to run a program, or utility, known as Check Disk. You can see where the command comes from. The Check Disk program is there to make sure that the computerâs files and file system are in order.