Refine documentations and examples.

[codecov[bot]]

Codecov Report

Merging #74 (72aff6e) into main (e042062) will increase coverage by 0.02%. Report is 2 commits behind head on main. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main      #74      +/-   ##
==========================================
+ Coverage   92.88%   92.90%   +0.02%     
==========================================
  Files          20       20              
  Lines        7586     7586              
==========================================
+ Hits         7046     7048       +2     
+ Misses        540      538       -2     

see 1 file with indirect coverage changes

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[rogerwwww]

Nice work. Merged.