# BHSaddons feature: wordboundary

Feature type | Data type | Available for node types
---  | --- | --- 
`Node`|`String`|`word`

## Feature description

This feature indicates wordboudaries (spaces OR maqaf). The maqaf (מַקָּף‎) functions in Hebrew to connect two words.

## Feature values

Either the number '1' (string) or empty. Frequency table for this feature:

Value | Description | Frequency
---|---|---
<empty>|not the last node in a word|
1|last node in a word|

The following image shows the mapping of the surface text word to the `word` nodes in the BHSA Text-Fabric dataset, taking Genesis 1:1 as an example.

<img src="images/wordboundary.png">

The image shows that the first Hebrew word (בְּרֵאשִׁ֖ית) maps to two `word` nodes in Text-Fabric: node 1 for the 'בְּ' and node 2 for the 'רֵאשִׁ֖ית' part. In order to clearly mark the surface level wordboundaries, the feature value for wordboundary is set to 'empty' for node 1 and set to '1' for node 2.

## Example usage

The first verse of Genesis:

```
for w in F.otype.s("word")[:11]:
    sec = T.sectionFromNode(w)  # (book, chapter, verse)
    b = F.wordboundary.v(w)
    print(f'{sec} {b:1} {(F.g_word_utf8.v(w))}')

('Genesis', 1, 1)   בְּ
('Genesis', 1, 1) 1 רֵאשִׁ֖ית
('Genesis', 1, 1) 1 בָּרָ֣א
('Genesis', 1, 1) 1 אֱלֹהִ֑ים
('Genesis', 1, 1) 1 אֵ֥ת
('Genesis', 1, 1)   הַ
('Genesis', 1, 1) 1 שָּׁמַ֖יִם
('Genesis', 1, 1)   וְ
('Genesis', 1, 1) 1 אֵ֥ת
('Genesis', 1, 1)   הָ
('Genesis', 1, 1) 1 אָֽרֶץ
```