Your PIC design will make more sense with text to identify different parts of your design.
This can be done by using the Nazca text() function. The text() function returns a cell with provided text of specified parameters. Below is a simple example of placing text in Nazca.

# example created by Bright Photonics

import nazca as nd

nd.text('Nazca-Design').put()

nd.export_gds()

Text is flexible in height, layer, placement, alignment and font.
The default ‘nazca’ font is foundry friendly, as it has no sharp angles, no islands and no closed areas. If needed, the default ‘nazca’ font can be changed to the following other fonts: ‘liberation’, ‘cousine’ and ‘ocra’.

# example created by Bright Photonics

import nazca as nd

message = 'Nazca-Design'
nd.text(text=message, height=30, layer=1, align='cc').put(0, 0)

f = nd.Font('cousine')
f.text(text=message, height=20, layer=2, align='cc').put(0, 40)

nd.export_gds()

# example created by Bright Photonics

import nazca as nd

message = "Nazca, open source Photonic IC design in Python 3!"
for i in range(7):
    T1 = nd.text(text=message, height=70*0.85**i, align='lb')
    T1.put(0, -i*100)
    T1.put(0, -1200+i*100)

    T2 = nd.text(text=message, height=70*0.85**i, align='rb')
    T2.put(4000, -i*100)
    T2.put(4000, -1200+i*100)

nd.text('NAZCA', height=500, align='cc', layer=2).put(0.5*4000, -600)
nd.export_gds()