Fine gravel: gravel consisting of particles with a diameter of 2 to 4 mm. Lag gravel: a surface accumulation of coarse gravel produced by the removal of finer particles. Pay gravel: also known as pay dirt; a nickname for gravel with a high concentration of gold and other precious metals.
March 31, 2015. Locate the operating system on your Mac computer using the Apple menu. The Apple menu is found in the top corner of your Mac's screen. Use it to access the About This Mac dialog, through which you can view the version of the OS X operating system currently running on your Mac. Step Click the Apple logo in the top-left corner of your screen to open the Apple menu.
Mac OS = could mean just Mac OS 9, or 1 through 8 and no Mac OS X. Mac OS X = could just mean 10.0, or it could mean all PowerPC Macs running 10.0, or all versions of Mac OS X. Mac OS X PPC = means G3, G4, and G5s may support it with 10.0 through 10.5.8, but no certainty exists which ones.