I've recently taken a number of botanical photos on a visit to an alpine meadow. I want to attach permanent captions (plant name) at the bottom of each image. The captions need to be visible whether the photo is viewed on a screen or printed via LR and in some cases probably also via Photoshop CS6. This rules out simply adding a caption via the metadata in LR and/or adding custom text in the print module of LR.
Is there a straightforward way to do what I want? I've searched on the internet and in a couple of books and nothing has leapt out at me. Any thought would be much appreciated.