def do_help(topic)
if !topic
printf("type \\h <cmd> where <cmd> is one of the following:\n")
left_center_right = 'L'
for i in 0..QL_HELP.length-1
case left_center_right
when 'L'
printf(" %-25s", QL_HELP[i][0])
left_center_right = 'C'
when 'C'
printf("%-25s", QL_HELP[i][0])
left_center_right = 'R'
when 'R'
printf("%-25s\n", QL_HELP[i][0])
left_center_right = 'L'
end
end
if (left_center_right != 'L')
STDOUT.print("\n")
end
printf("type \\h * for a complete description of all commands\n")
else
help_found = FALSE
for i in 0..QL_HELP.length-1
if QL_HELP[i][0] == topic || topic == "*"
help_found = TRUE
printf("Command: %s\n", QL_HELP[i][0])
printf("Description: %s\n", QL_HELP[i][1])
printf("Syntax:\n")
printf("%s\n", QL_HELP[i][2])
printf("\n")
end
end
if !help_found
printf("command not found, ")
printf("try \\h with no arguments to see available help\n")
end
end
end