vlina gismu

x1 is a logical alternation/disjunction, stating that x2 (du'u) and/or x3 (du'u) is/are true.

See also kanxe, cmavo list a, ja, gi'a, gu'a.

In notes:

kanxe
x1 is a conjunction, stating that x2 (du'u) and x3 (du'u) are both true.
vlinyje'u
at least one of the statements x1 (du'u) and x2 (du'u) is true (logical disjunction)
vlinykemlojvro
v1 is an OR gate with input [pins] v2 and output [pins] v3 in circuit/system v4.
zilvlina
at least one of the statements x1 (du'u) and x2 (du'u) is true (logical disjunction)
jijgi
x1 is a connective question, requesting the connective between x2 (du'u) and x3 (du'u) in that order, assuming that they are true.
ribga
x1 is a logical statement that x2 (du'u) is true regardless of/irrespective of/independent of/whether or not x3 being/is true.
sigda
x1 is a material conditional/'IF' statement (logical statement) saying that x2 (du'u) logically implies x3 (du'u) ("x3 is true if x2 is true; if x2, then x3; x2 being true is sufficient to guarantee the truth of x3").
skudi
x1 is a logical XOR/mutual-contradiction/exclusive disjunction statement saying that only/exactly one of x2 and x3 can be true at any given time.
tsida
x1 is a logical statement of proposition-equivalence/is a biconditional/'IFF' statement saying that x2 (du'u) is true if and only if x3 is true ("x2 is logically equivalent to x3; x2 being true is sufficient and necessary for guaranteeing the truth of x3; x2 iff x3").