A language may contain more than one means for expressing future time reference. For instance, there may be a separate device for expressing the immediate future (Bybee et al. 1994). For the immediate future, a situation can be viewed as about to take place. Whereas in Nganasan, the resultative has this function (1), in Estonian, a periphrastic device may be used (2).

(1) Nganasan

tǝuɁkiɁinǝ
tǝu-Ɂki-Ɂi-nǝ
fly-RES-AOR.RFL-1SG.RFL
'I'm just flying to Dudinka'
(Wagner-Nagy 2018:212)

(2) Estonian

Rong on väljumas**
rong on välju-ma-s
train be.3SG leave-SUP-INE
'The train is about to leave'

Coding

The value is '1' if there is a grammatical device (either morphological or periphrastic), which can be used to express an action that is about to happen (regardless of other possible functions the corresponding device may have). Instances of a lexical verb used in the past tense form to convey an immediate activity were not considered (e.g., Estonian Läksime! go.PST.1PL ‘Off we go!’, cf. Russian пошли).