LabAnalyst can draw plots using the modern 'Quartz' method, which is of high visual quality, and the older 'QuickDraw' method, which is of lower visual quality but is much faster for large files or multichannel plots. The default is to use Quartz for drawing operations that won't take very long (e.g., small files) and switch to QuickDraw when Quartz would seem slow, but you can force exclusive use of Quartz if you wish. Note that drawing will seem noticeably slow if the number of samples is more than roughly ten-fold greater than the screen width in pixels. Of course, this will vary somewhat with system speed, but for extremely big files with hundreds of thousands or millions of samples, Quartz drawing is impractical (and you can't really see its visual benefits anyway).
The default font for most text output is 'Lucida Grande', which should be found in all OS X systems. If you select Lucida Grande and it isn't present, the program searches for similar common fonts (Tahoma, Arial) and defaults to Geneva if none of these are available.
The embossed text option gives large window labels a '3-D' appearance; the aqua them adds a blue tone, as in early OS X versions. Neither affects program function.
To avoid having to re-set your preferences at every launch, click the ‘Save Current Preferences’ button to store your current settings (including screen colors, current values of FiO2, FiCO2, and RQ, etc.). When launched, LabAnalyst reads the preferred settings and uses them as defaults.