latex force capital letters code example

Example 1: latex reduce letter spacing

\usepackage[tracking=true]{microtype}

\textls[100]{normal} % 100 is the default value
\textls[200]{more space}
\textls[50]{less space}

Example 2: latex accented letters

Some accented characters
{\"a} {\^e} {\`i} {\.I} {\o} {\'u} {\aa} {\c c} {\u g} {\l} {\~n} {\H o} {\v r} {\ss} {\r u}