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TrackedSymbols

TrackedSymbols
is an option to Refresh, Manipulate, and related functions that specifies which symbols should trigger updates when their values are changed.

MORE INFORMATION

The following settings can be used:

	All	all possible symbols
	Full	symbols that appear explicitly in the input expression
	True	symbols that appear in Manipulate, etc. controls
	Automatic	symbols being tracked in enclosing constructs
	{x,y,z,...}	an explicit list of symbols

When a list of symbols is given, the typical usage is .

EXAMPLES

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Basic Examples (1)

Specify symbols in Manipulate that will be used for updating:

In[1]:=

Out[1]=

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Possible Issues (2)

Symbols in an explicit list will not be tracked if they were not evaluated in the enclosing construct:

Using Rule for TrackedSymbols fails in some cases because the symbols are evaluated:

Generally, RuleDelayed should always be used for TrackedSymbols: