是 - just so, this, right

by all means; at all costs; absolutely

correction; revision; redressing; rectifying

certainly; by all means

national policy

approval; approbation; endorsement

certainly; without fail

this and that; this or that; one thing or another; this way and that

practical search for the truth

right or wrong

("like this"; often the opening word of a sutra)

corrective action (measure); rectification

discrimination of right and wrong; distinguishing between right and wrong