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$latex Command $$
Command
where
Command
contains the underbar character _
,
the caret character ^
or both.
Command

Output

x^{2y}  @(@ x^{2y} @)@ 
x_{2y}  @(@ x_{2y} @)@ 
x^{y^{2}}  @(@ x^{y^{2}} @)@ 
x^{y_{1}}  @(@ x^{y_{1}} @)@ 
x^{y}_{1}  @(@ x^{y}_{1} @)@ 
x_{1}^{y}  @(@ x_{1}^{y} @)@ 
$latex x_1_2 $$
would generate an error message. On the other hand the input
$latex {x_1}_2 $$
would result in the output
@[@
{x_1}_2
@]@
$latex x_ab x_12 x_ab12 $$
will generate the output
@[@
x_ab x_12 x_ab12
@]@
Standard Latex, as per Lamport's
reference
,
would output
@[@
x_a b x_1 2 x_a b12
@]@
for this input.
It may be that future versions of OMhelp
will adopt this convention.
Thus, if you wish to group more than one character in a subscript
or superscript,
you should use parenthesis.
For example, the following input would obtain the
same effect as the input above:
$latex x_{ab} x_{12} x_{ab} 12 $$