Aggressive Poker Strategies - How to avoid the limp

I've written previously about how to deal with limpers but what about knowing when to limp? Dara O'Kearney's new book Endgame Poker Strategy:

An open limp is when the first player to enter the pot preflop bets only the amount of the big blind, the minimum bet The under the gun

poker vasto To limp in poker is to bet the absolute minimum needed to stay in a hand Limping is often used when the little blind simply calls the big blind

poker lotto win tracker To limp is to open the betting by merely calling the blind in a game that has blinds, or by calling the bring-in for a game that has bring-ins,