begin-methods           Return to the beginning of the file.
current_line-methods    Get the current line in the file.
goto-methods            Go to specified line in the file
laf-class               Class "laf"
laf-package             Fast access to large ASCII files
laf_column-class        Class "laf_column"
laf_open_csv            Create a connection to a comma seperated value
                        (CSV) file.
laf_open_fwf            Create a connection to a fixed width file.
next_block-methods      Read the next block of data from a file.
process_blocks-methods
                        Blockwise processing of blocks.
read_lines-methods      Read lines from the file
stats                   Calculate simple statistics of columns
