What Can Po' Folk Do about Court Costs and Record Costs on Appeal in Texas State Courts?

Here I'm talking about appeals, not applications for extraordinary writs. Court costs here are filing fees (Some other things are counted by trial courts as court costs, but they generally don't affect the ordinary appeals of poor people.). An appeal is generally decided on the basis of a clerk's record and a reporter's (or recorder's) record. A clerk's record used to be called a transcript in Texas practice and a reporter's record, a statement of facts; you might still hear these terms today, and it helps to know these terms when you're reading old law. A court clerk's job is to keep track of the documents filed, orders entered, and docket entries made in the trial court (These days, they're practically always e-documents.), and, when asked and when paid the fees allowed by law, to prepare an electronic record of them for the use of the parties and the appellate court on appeal. The reporter (practically always using machine shorthand) or recorder (practically always using a special audio recorder) practically always takes down jury selection, opening statements, witness testimony and trial arguments for a record for the appeals court and is also the steward of the trial exhibits.
Indigents, that is, people who cannot afford to pay costs, can ask to be excused from filing fees in trial court and if the trial court agrees that a person was and is indigent at the time rendering civil judgment, those fees will be excused, and if they were excused at trial, unless there is some evidence that the poor person's status has changed, they will be excused from filing fees on appeal. In criminal cases, a defendant can be found indigent at the beginning of the trial proceedings, and, in the absence of new evidence, that finding will hold even through appellate proceedings. Criminal defendants and sexually-violent-predator respondents who are indigent have a right to be represented by lawyers and to get the clerk's record and the reporter's or recorder's record at no expense to them at trial and on initial appeal. Indigent people who may lose their parental rights have a right to appointed counsel and reporter's record on initial appeal.
There are generally not statutes nor rules for appellate indigency record relief for other kinds of prospective appellants in Texas state courts.