Words similar to optional

Example sentences for: optional

How can you use “optional” in a sentence? Here are some example sentences to help you improve your vocabulary:

This is optional, but if it is a memorial service, there will be no body to view.
However, socks are optional.
Each treatment also has an optional actionMeasurement that would allow relevant values to be stored.
Each StandardQuantitationType has an optional association to Channel and a designator indicating whether the value refers to the background or foreground.
The left-hand panel lists the genes, the databases from which their identities were derived, and optional up- and down-arrows to indicate under- or over-expression; the middle panel shows a tree visualization of categories in the style of the AmiGO browser [ 1 ] and, in addition, provides a visualization of the flagged genes in the particular microarray experiment.