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<head><title>viewing the symbols defined so far</title>
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<div><a href="index.html" title="">Macaulay2Doc</a> > <a href="___The_sp__Macaulay2_splanguage.html" title="">The Macaulay2 language</a> > <a href="_variables.html" title="The variables of a complex or co-complex.">variables</a> > <a href="_viewing_spthe_spsymbols_spdefined_spso_spfar.html" title="">viewing the symbols defined so far</a></div>
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<div><h1>viewing the symbols defined so far</h1>
<div>After using Macaulay2 for a while, you may have stored data in several variables. The system also stores output values for you in output variables. You may wish to free the memory space occupied by that data, or you may simply wish to remind yourself where you stored a previously computed value.<p/>
We may use the command <a href="_list__User__Symbols.html" title="display the user's symbols">listUserSymbols</a> to obtain a list of the user's symbols encountered so far.<table class="examples"><tr><td><pre>i1 : ff = 20:4; h = true; kk
o3 = kk
o3 : Symbol</pre>
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<tr><td><pre>i4 : listUserSymbols
o4 = symbol class value location of symbol
------ ----- ----- ------------------
h : Boolean -- true /builddir/build/BUILD/Macaulay2-1.3.1-r10737/Macaulay2/m2/setup.m2:40:40-40:40
ff : Sequence -- (4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,. stdio:1:1-1:2
kk : Symbol -- kk stdio:1:22-1:23 </pre>
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The symbols are listed in chronological order, and the type of value stored under it is displayed.<p/>
We can clear the output symbols with <a href="_clear__Output.html" title="forget output values">clearOutput</a>.<table class="examples"><tr><td><pre>i5 : clearOutput</pre>
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<tr><td><pre>i6 : listUserSymbols
o6 = symbol class value location of symbol
------ ----- ----- ------------------
h : Boolean -- true /builddir/build/BUILD/Macaulay2-1.3.1-r10737/Macaulay2/m2/setup.m2:40:40-40:40
ff : Sequence -- (4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,. stdio:1:1-1:2
kk : Symbol -- kk stdio:1:22-1:23 </pre>
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We can clear all the symbols with <a href="_clear__All.html" title="forget everything">clearAll</a>.<table class="examples"><tr><td><pre>i7 : clearAll</pre>
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<tr><td><pre>i8 : listUserSymbols
o8 = symbol class value location of symbol
------ ----- ----- ------------------</pre>
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