Operation machine

An operation machine comprising:

• a warning generation means configured to determine whether there is abnormality or not and to generate a warning when there is abnormality;
• a warning storage means configured to store warning information on the warning;
• a display means configured to display the warning information stored in the warning storage means;
• and
• a warning pseudo erasing means configured to erase the warning information in a pseudo-erasing manner, wherein
• the warning pseudo erasing means includes:
• a pseudo erasure specifying part configured to specify the warning information that is to be erased in the pseudo-erasing manner;
• a flag setting part configured to set, to the warning information, a pseudo erasure flag indicating the specifying of performing the erasing in the pseudo-erasing manner, the warning information being specified by the pseudo erasure specifying part to be erased in the pseudo-erasing manner;
• and
• a non-display instructing part configured to provide an instruction not to display, by the display means, the warning information being set with the pseudo erasure flag by the flag setting part.