A very common technique used in Funk playing is the slide. There are two basic types of slides, one uses a grace note with no written time of its own (a quick slide) and the other is a valued slide in which the first note is held before sliding to the second note. A slide may be ascending or descending.
An ascending slide is executed by starting at a note below the one you are aiming for and then sliding up to the desired note. Often the slide begins from two frets below. The ascending slide is indicated by a diagonal line below the note, accompanied by the symbol "S".
A descending slide starts above the desired note and slides down to it. The descending slide is indicated by a diagonal line above the note, accompanied by the symbol "S".
Instead of sliding immediately to a note, it is also possible to hold a note for a specific time value before sliding to another note. This is called a valued slide. It is indicated by a curved line and the symbol "S".
This example demonstrates the difference between valued slides and grace note slides.
Here is a Funk lick which makes use of slides.