Update `help' functionality:
    
        help.sh:
            
            - Separate execution of backend-related action names in three
              parts. One for actions that use all action values, other for
              actions that use just one action value and another for
              actions that don't use any action value at all.
    
        Backends/Docbook/docbook_getEntry.sh:
    
            - Start using FLAG_BACKEND in place of writing file extensions
              literllay.
    
        Backends/Texinfo/texinfo.sh:
    
            - Remove texinfo.sh file. Deam! This was what I initially
              intended to do, but forgot to specify the file location and
              all modified files were commited with the wrong comment.
    
        Backends/Texinfo/texinfo_updateNodes.sh:
    
            - Remove MANUAL_CHAPTER_DIR and MANUAL_CHAPTER_NAME variables.
              They are already defined in the help.sh file.
    
        Backends/Texinfo/texinfo_renameCrossReferences.sh:
    
            - Start using first and second positional parameters passed to
              this function as references to build the source (ENTRY_SRC)
              and target (ENTRY_DST) documentation entries.
    
            - Remove unused variables (e.g., NODE, COUNT).
    
            - Start using FALG_BACKEND variable as function suffix.
    
        Backends/Texinfo/texinfo_deleteEntry.sh:
    
            - Start using $@ instead of ${ACTIONVALS[*]}.
    
            - Remove MANUAL_CHAPTER_DIR variable definition. It has been
              already defined in help.sh.
    
            - Remove cli_syncroRepoChanges function invocation from here.
              It is has been already invocated in help.sh.
    
            - Don't perform pramble for deletion actions here
              (cli_printActionPreamble). This make the whole deletion
              process slower and interferes with file renaming actions.
    
            - Add file verification for ENTRIES, before deleting them.
    
            - Don't update output files here. They are already updated on
              help.sh.
    
        Backends/Texinfo/texinfo_getChapterDir.sh:
    
            - Support a list of entries here. Assuming more than one
              documentation entry be provided, a list of chapter directory
              is returned as output.
    
        Backends/Texinfo/texinfo_updateOutputFiles.sh:
    
            - Start using FLAG_BACKEND variable as suffix for invoking
              functions.
    
        Backends/Texinfo/texinfo_renameEntry.sh:
    
            - Start using FLAG_BACKEND variable as suffix for invoking
              functions.
    
            - Use function positional parameters as reference to perform
              the renaming action.
    
        Backends/Texinfo/texinfo_copyEntry.sh:
    
            - Use function positional parameters to restrict the amount of
              non-option arguments passed to centos-art.sh script.
    
            - Start using FLAG_BACKEND variable as suffix for invoking
              functions.
    
            - Use function positional parameters as reference to define
              the source (ENTRY_SRC) and target (ENTRY_DST) documentation
              entries.
    
            - Don't use version control verifications (e.g.,
              cli_syncroRepoChanges and cli_commitRepoChanges) here. These
              actions are performed in help.sh already.
    
            - Don't force the existence of dependent directories for
              docuentation entries. Dependent directories are optional.
    
        Backends/Texinfo/texinfo_searchIndex.sh:
    
            - Rebuild output files to propagate recent changes. This is
              required because each time an index search is perform
              (through the `--search' option) all changes are braught from
              the repository to the working copy. So, in order to perform
              the index search in up to date files, we rebuilt the output
              files here.
    
              At this time, only texinfo backend, specifically its info
              output, seems to get benefit from this.
    
        Backends/Texinfo/texinfo_getEntry.sh:
        
            - Sanitate action value to use absolute paths. This let us
              create documentation entries from action values directly.
              There is no need to perform the sanitation elsewhere, the
              last purpose of the sanitation is build the documentation
              entry correctly. So, doing it here feels ok.
    
        Backends/Texinfo/texinfo_editEntry.sh:
    
            - Start using FLAG_BACKEND variable as suffix for invoking
              functions.
    
            - Don't update output files here. They are already updated on
              help.sh.
    
        Backends/Texinfo/texinfo_updateMenu.sh:
    
            - Remove MANUAL_CHAPTER_DIR and MANUAL_CHAPTER_NAME variables.
              They are already defined in the help.sh file.
    
        help_getOptions.sh:
    
            - Build the function definition file related to action name
              and verify its existence before initialize it.