Often, the team individuals have their own line manager, and so the project manager has no implied authority - yet still needs to motivate the individual.

He had distinctly implied that he would at least let her know of the locality to which he had journeyed; but he had not sent a line to notify his address.

Then people have created line kind which symbolizes the auspicious auspicious implied meaning in life, in order to express the compliments, place the hope of praying for blessings.